257683263 has 32 divisors (see below), whose sum is σ = 384445440. Its totient is φ = 152570880.

The previous prime is 257683249. The next prime is 257683271. The reversal of 257683263 is 362386752.

It is a happy number.

It is not a de Polignac number, because 257683263 - 2⁹ = 257682751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257683243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417331 + ... + 417947.

It is an arithmetic number, because the mean of its divisors is an integer number (12013920).

Almost surely, 2^257683263 is an apocalyptic number.

257683263 is a deficient number, since it is larger than the sum of its proper divisors (126762177).

257683263 is a wasteful number, since it uses less digits than its factorization.

257683263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087.

The product of its digits is 362880, while the sum is 42.

The square root of 257683263 is about 16052.5157841380. The cubic root of 257683263 is about 636.3490553573.

The spelling of 257683263 in words is "two hundred fifty-seven million, six hundred eighty-three thousand, two hundred sixty-three".