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680260 = 225743113
BaseRepresentation
bin10100110000101000100
31021120010211
42212011010
5133232020
622325204
75532160
oct2460504
91246124
10680260
114250a9
12289804
131aa829
14139ca0
15d685a
hexa6144

680260 has 48 divisors (see below), whose sum is σ = 1685376. Its totient is φ = 225792.

The previous prime is 680249. The next prime is 680263. The reversal of 680260 is 62086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5964 + ... + 6076.

It is an arithmetic number, because the mean of its divisors is an integer number (35112).

2680260 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 680260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842688).

680260 is an abundant number, since it is smaller than the sum of its proper divisors (1005116).

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

680260 is a wasteful number, since it uses less digits than its factorization.

680260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 680260 is about 824.7787582134. The cubic root of 680260 is about 87.9477996201.

The spelling of 680260 in words is "six hundred eighty thousand, two hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 43 70 86 113 140 172 215 226 301 430 452 565 602 791 860 1130 1204 1505 1582 2260 3010 3164 3955 4859 6020 7910 9718 15820 19436 24295 34013 48590 68026 97180 136052 170065 340130 680260