257232697 has 16 divisors (see below), whose sum is σ = 282744000. Its totient is φ = 233077824.

The previous prime is 257232671. The next prime is 257232709. The reversal of 257232697 is 796232752.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257232697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257232197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57918 + ... + 62200.

It is an arithmetic number, because the mean of its divisors is an integer number (17671500).

Almost surely, 2^257232697 is an apocalyptic number.

It is an amenable number.

257232697 is a deficient number, since it is larger than the sum of its proper divisors (25511303).

257232697 is a wasteful number, since it uses less digits than its factorization.

257232697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440.

The product of its digits is 317520, while the sum is 43.

The square root of 257232697 is about 16038.4755198242. The cubic root of 257232697 is about 635.9779479255.

The spelling of 257232697 in words is "two hundred fifty-seven million, two hundred thirty-two thousand, six hundred ninety-seven".