457638865 has 16 divisors (see below), whose sum is σ = 554167296. Its totient is φ = 362793600.

The previous prime is 457638851. The next prime is 457638887. The reversal of 457638865 is 568836754.

It is not a de Polignac number, because 457638865 - 2²³ = 449250257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298150 + ... + 299680.

It is an arithmetic number, because the mean of its divisors is an integer number (34635456).

Almost surely, 2^457638865 is an apocalyptic number.

It is an amenable number.

457638865 is a deficient number, since it is larger than the sum of its proper divisors (96528431).

457638865 is a wasteful number, since it uses less digits than its factorization.

457638865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040.

The product of its digits is 4838400, while the sum is 52.

The square root of 457638865 is about 21392.4955299750. The cubic root of 457638865 is about 770.6212252113.

The spelling of 457638865 in words is "four hundred fifty-seven million, six hundred thirty-eight thousand, eight hundred sixty-five".