256764937 has 8 divisors (see below), whose sum is σ = 301654080. Its totient is φ = 215466960.

The previous prime is 256764881. The next prime is 256764943. The reversal of 256764937 is 739467652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256764937 - 2²⁷ = 122547209 is a prime.

It is a super-2 number, since 2×256764937² = 131856465745227938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256764947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 897637 + ... + 897922.

It is an arithmetic number, because the mean of its divisors is an integer number (37706760).

Almost surely, 2^256764937 is an apocalyptic number.

It is an amenable number.

256764937 is a deficient number, since it is larger than the sum of its proper divisors (44889143).

256764937 is a wasteful number, since it uses less digits than its factorization.

256764937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795583.

The product of its digits is 1905120, while the sum is 49.

The square root of 256764937 is about 16023.8864511703. The cubic root of 256764937 is about 635.5922199452.

The spelling of 256764937 in words is "two hundred fifty-six million, seven hundred sixty-four thousand, nine hundred thirty-seven".