256774607 has 6 divisors (see below), whose sum is σ = 271000728. Its totient is φ = 243259812.

The previous prime is 256774603. The next prime is 256774627. The reversal of 256774607 is 706477652.

It is not a de Polignac number, because 256774607 - 2² = 256774603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256774603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 355283 + ... + 356004.

It is an arithmetic number, because the mean of its divisors is an integer number (45166788).

Almost surely, 2^256774607 is an apocalyptic number.

256774607 is a deficient number, since it is larger than the sum of its proper divisors (14226121).

256774607 is an equidigital number, since it uses as much as digits as its factorization.

256774607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711325 (or 711306 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 44.

The square root of 256774607 is about 16024.1881853653. The cubic root of 256774607 is about 635.6001988378.

The spelling of 256774607 in words is "two hundred fifty-six million, seven hundred seventy-four thousand, six hundred seven".