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6998680 = 2351343313
BaseRepresentation
bin11010101100101010011000
3111011120101101
4122230222120
53242424210
6410001144
7113326213
oct32545230
914146341
106998680
113a50237
1224161b4
1315b0740
14d0277a
15933a3a
hex6aca98

6998680 has 64 divisors (see below), whose sum is σ = 17408160. Its totient is φ = 2515968.

The previous prime is 6998627. The next prime is 6998681. The reversal of 6998680 is 868996.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6998680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6998681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22204 + ... + 22516.

Almost surely, 26998680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6998680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8704080).

6998680 is an abundant number, since it is smaller than the sum of its proper divisors (10409480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6998680 is a wasteful number, since it uses less digits than its factorization.

6998680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 6998680 is about 2645.5018427512. The cubic root of 6998680 is about 191.2810933825.

The spelling of 6998680 in words is "six million, nine hundred ninety-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 13 20 26 40 43 52 65 86 104 130 172 215 260 313 344 430 520 559 626 860 1118 1252 1565 1720 2236 2504 2795 3130 4069 4472 5590 6260 8138 11180 12520 13459 16276 20345 22360 26918 32552 40690 53836 67295 81380 107672 134590 162760 174967 269180 349934 538360 699868 874835 1399736 1749670 3499340 6998680