257262663 has 16 divisors (see below), whose sum is σ = 392451840. Its totient is φ = 146845056.

The previous prime is 257262661. The next prime is 257262671. The reversal of 257262663 is 366262752.

It is a happy number.

257262663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 257262663 - 2¹ = 257262661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257262661) 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, 14248 + ... + 26786.

It is an arithmetic number, because the mean of its divisors is an integer number (24528240).

Almost surely, 2^257262663 is an apocalyptic number.

257262663 is a deficient number, since it is larger than the sum of its proper divisors (135189177).

257262663 is a wasteful number, since it uses less digits than its factorization.

257262663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13526.

The product of its digits is 181440, while the sum is 39.

The square root of 257262663 is about 16039.4096836511. The cubic root of 257262663 is about 636.0026427840.

The spelling of 257262663 in words is "two hundred fifty-seven million, two hundred sixty-two thousand, six hundred sixty-three".