257683066 has 8 divisors (see below), whose sum is σ = 388548864. Its totient is φ = 128166780.

The previous prime is 257683061. The next prime is 257683079. The reversal of 257683066 is 660386752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (257683061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336900 + ... + 337663.

It is an arithmetic number, because the mean of its divisors is an integer number (48568608).

Almost surely, 2^257683066 is an apocalyptic number.

257683066 is a deficient number, since it is larger than the sum of its proper divisors (130865798).

257683066 is a wasteful number, since it uses less digits than its factorization.

257683066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674756.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 257683066 is about 16052.5096480270. The cubic root of 257683066 is about 636.3488931934.

The spelling of 257683066 in words is "two hundred fifty-seven million, six hundred eighty-three thousand, sixty-six".