256601927 has 4 divisors (see below), whose sum is σ = 271696176. Its totient is φ = 241507680.

The previous prime is 256601879. The next prime is 256601963. The reversal of 256601927 is 729106652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256601927 - 2⁸ = 256601671 is a prime.

It is a super-2 number, since 2×256601927² = 131689097880226658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256601987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7547099 + ... + 7547132.

It is an arithmetic number, because the mean of its divisors is an integer number (67924044).

Almost surely, 2^256601927 is an apocalyptic number.

256601927 is a deficient number, since it is larger than the sum of its proper divisors (15094249).

256601927 is a wasteful number, since it uses less digits than its factorization.

256601927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15094248.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 256601927 is about 16018.7991747197. The cubic root of 256601927 is about 635.4576872707.

The spelling of 256601927 in words is "two hundred fifty-six million, six hundred one thousand, nine hundred twenty-seven".