256620600 has 72 divisors (see below), whose sum is σ = 861823560. Its totient is φ = 68431680.

The previous prime is 256620587. The next prime is 256620601. The reversal of 256620600 is 6026652.

256620600 is a `hidden beast` number, since 2 + 56 + 6 + 2 + 0 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256620601) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 69484 + ... + 73083.

Almost surely, 2^256620600 is an apocalyptic number.

256620600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256620600 is an abundant number, since it is smaller than the sum of its proper divisors (605202960).

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

256620600 is a wasteful number, since it uses less digits than its factorization.

256620600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142589 (or 142577 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 256620600 is about 16019.3820105521. The cubic root of 256620600 is about 635.4731010464.

The spelling of 256620600 in words is "two hundred fifty-six million, six hundred twenty thousand, six hundred".