256463727 has 8 divisors (see below), whose sum is σ = 368255664. Its totient is φ = 157823808.

The previous prime is 256463723. The next prime is 256463743. The reversal of 256463727 is 727364652.

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

It is not a de Polignac number, because 256463727 - 2² = 256463723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256463723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3287958 + ... + 3288035.

It is an arithmetic number, because the mean of its divisors is an integer number (46031958).

Almost surely, 2^256463727 is an apocalyptic number.

256463727 is a deficient number, since it is larger than the sum of its proper divisors (111791937).

256463727 is a wasteful number, since it uses less digits than its factorization.

256463727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6576009.

The product of its digits is 423360, while the sum is 42.

The square root of 256463727 is about 16014.4849121038. The cubic root of 256463727 is about 635.3435857333.

The spelling of 256463727 in words is "two hundred fifty-six million, four hundred sixty-three thousand, seven hundred twenty-seven".