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7690868 = 221726653
BaseRepresentation
bin11101010101101001110100
3112110201212222
4131111221310
53432101433
6432501512
7122241233
oct35255164
915421788
107690868
114383299
1226aa898
131793813
141042b1a
15a1db98
hex755a74

7690868 has 18 divisors (see below), whose sum is σ = 14299446. Its totient is φ = 3618688.

The previous prime is 7690867. The next prime is 7690873. The reversal of 7690868 is 8680967.

It can be written as a sum of positive squares in 3 ways, for example, as 1024144 + 6666724 = 1012^2 + 2582^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7690861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2171 + ... + 4482.

Almost surely, 27690868 is an apocalyptic number.

It is an amenable number.

7690868 is a deficient number, since it is larger than the sum of its proper divisors (6608578).

7690868 is a wasteful number, since it uses less digits than its factorization.

7690868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6691 (or 6672 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 7690868 is about 2773.2414247591. The cubic root of 7690868 is about 197.3899873348.

Subtracting 7690868 from its reverse (8680967), we obtain a palindrome (990099).

It can be divided in two parts, 7690 and 868, that added together give a palindrome (8558).

The spelling of 7690868 in words is "seven million, six hundred ninety thousand, eight hundred sixty-eight".

Divisors: 1 2 4 17 34 68 289 578 1156 6653 13306 26612 113101 226202 452404 1922717 3845434 7690868