257622064 has 40 divisors (see below), whose sum is σ = 600477440. Its totient is φ = 104597568.

The previous prime is 257622047. The next prime is 257622119. The reversal of 257622064 is 460226752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58404 + ... + 62659.

It is an arithmetic number, because the mean of its divisors is an integer number (15011936).

Almost surely, 2^257622064 is an apocalyptic number.

It is an amenable number.

257622064 is an abundant number, since it is smaller than the sum of its proper divisors (342855376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257622064 is a wasteful number, since it uses less digits than its factorization.

257622064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121097 (or 121091 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 257622064 is about 16050.6094588336. The cubic root of 257622064 is about 636.2986743730.

The spelling of 257622064 in words is "two hundred fifty-seven million, six hundred twenty-two thousand, sixty-four".