257064207 has 16 divisors (see below), whose sum is σ = 358026240. Its totient is φ = 163854432.

The previous prime is 257064173. The next prime is 257064211. The reversal of 257064207 is 702460752.

It is not a de Polignac number, because 257064207 - 2²³ = 248675599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257064217) 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 15 ways as a sum of consecutive naturals, for example, 5383 + ... + 23304.

It is an arithmetic number, because the mean of its divisors is an integer number (22376640).

Almost surely, 2^257064207 is an apocalyptic number.

257064207 is a deficient number, since it is larger than the sum of its proper divisors (100962033).

257064207 is a wasteful number, since it uses less digits than its factorization.

257064207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28822.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 257064207 is about 16033.2219781303. The cubic root of 257064207 is about 635.8390602824.

The spelling of 257064207 in words is "two hundred fifty-seven million, sixty-four thousand, two hundred seven".