257616089 has 8 divisors (see below), whose sum is σ = 267055488. Its totient is φ = 248307120.

The previous prime is 257616061. The next prime is 257616097. The reversal of 257616089 is 980616752.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257616089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257616049) 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 7 ways as a sum of consecutive naturals, for example, 28577 + ... + 36494.

It is an arithmetic number, because the mean of its divisors is an integer number (33381936).

Almost surely, 2^257616089 is an apocalyptic number.

It is an amenable number.

257616089 is a deficient number, since it is larger than the sum of its proper divisors (9439399).

257616089 is a wasteful number, since it uses less digits than its factorization.

257616089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65215.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 257616089 is about 16050.4233277506. The cubic root of 257616089 is about 636.2937551334.

The spelling of 257616089 in words is "two hundred fifty-seven million, six hundred sixteen thousand, eighty-nine".