256620760 has 32 divisors (see below), whose sum is σ = 629888400. Its totient is φ = 93316480.

The previous prime is 256620757. The next prime is 256620773. The reversal of 256620760 is 67026652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291175 + ... + 292054.

Almost surely, 2^256620760 is an apocalyptic number.

256620760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256620760 is an abundant number, since it is smaller than the sum of its proper divisors (373267640).

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

256620760 is a wasteful number, since it uses less digits than its factorization.

256620760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583251 (or 583247 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 256620760 is about 16019.3870045018. The cubic root of 256620760 is about 635.4732331164.

The spelling of 256620760 in words is "two hundred fifty-six million, six hundred twenty thousand, seven hundred sixty".