257110664 has 8 divisors (see below), whose sum is σ = 482082510. Its totient is φ = 128555328.

The previous prime is 257110657. The next prime is 257110673. The reversal of 257110664 is 466011752.

It can be written as a sum of positive squares in only one way, i.e., 184144900 + 72965764 = 13570^2 + 8542^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×257110664² = 132211787085041792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257110664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16069409 + ... + 16069424.

Almost surely, 2^257110664 is an apocalyptic number.

It is an amenable number.

257110664 is a deficient number, since it is larger than the sum of its proper divisors (224971846).

257110664 is a wasteful number, since it uses less digits than its factorization.

257110664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32138839 (or 32138835 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 257110664 is about 16034.6706857360. The cubic root of 257110664 is about 635.8773612141.

The spelling of 257110664 in words is "two hundred fifty-seven million, one hundred ten thousand, six hundred sixty-four".