256832377 has 4 divisors (see below), whose sum is σ = 257049936. Its totient is φ = 256614820.

The previous prime is 256832357. The next prime is 256832383. The reversal of 256832377 is 773238652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256832377 - 2¹⁹ = 256308089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256832327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106999 + ... + 109372.

It is an arithmetic number, because the mean of its divisors is an integer number (64262484).

Almost surely, 2^256832377 is an apocalyptic number.

It is an amenable number.

256832377 is a deficient number, since it is larger than the sum of its proper divisors (217559).

256832377 is a wasteful number, since it uses less digits than its factorization.

256832377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217558.

The product of its digits is 423360, while the sum is 43.

The square root of 256832377 is about 16025.9906714062. The cubic root of 256832377 is about 635.6478617416.

The spelling of 256832377 in words is "two hundred fifty-six million, eight hundred thirty-two thousand, three hundred seventy-seven".