256526616 has 16 divisors (see below), whose sum is σ = 641316600. Its totient is φ = 85508864.

The previous prime is 256526593. The next prime is 256526623. The reversal of 256526616 is 616625652.

It is a happy number.

It is a super-2 number, since 2×256526616² = 131611809432822912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5344281 + ... + 5344328.

Almost surely, 2^256526616 is an apocalyptic number.

It is an amenable number.

256526616 is an abundant number, since it is smaller than the sum of its proper divisors (384789984).

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

256526616 is a wasteful number, since it uses less digits than its factorization.

256526616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10688618 (or 10688614 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 256526616 is about 16016.4482954243. The cubic root of 256526616 is about 635.3955136190.

The spelling of 256526616 in words is "two hundred fifty-six million, five hundred twenty-six thousand, six hundred sixteen".