257079716 has 6 divisors (see below), whose sum is σ = 449889510. Its totient is φ = 128539856.

The previous prime is 257079689. The next prime is 257079727. The reversal of 257079716 is 617970752.

It can be written as a sum of positive squares in only one way, i.e., 248692900 + 8386816 = 15770^2 + 2896^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32134961 + ... + 32134968.

It is an arithmetic number, because the mean of its divisors is an integer number (74981585).

Almost surely, 2^257079716 is an apocalyptic number.

It is an amenable number.

257079716 is a deficient number, since it is larger than the sum of its proper divisors (192809794).

257079716 is a wasteful number, since it uses less digits than its factorization.

257079716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64269933 (or 64269931 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 44.

The square root of 257079716 is about 16033.7056228434. The cubic root of 257079716 is about 635.8518470096.

The spelling of 257079716 in words is "two hundred fifty-seven million, seventy-nine thousand, seven hundred sixteen".