57620865 has 16 divisors (see below), whose sum is σ = 96202368. Its totient is φ = 29394816.

The previous prime is 57620839. The next prime is 57620873. The reversal of 57620865 is 56802675.

It is a happy number.

It is not a de Polignac number, because 57620865 - 2²⁰ = 56572289 is a prime.

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, 83164 + ... + 83853.

It is an arithmetic number, because the mean of its divisors is an integer number (6012648).

Almost surely, 2^57620865 is an apocalyptic number.

It is an amenable number.

57620865 is a deficient number, since it is larger than the sum of its proper divisors (38581503).

57620865 is a wasteful number, since it uses less digits than its factorization.

57620865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167048.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 57620865 is about 7590.8408625132. The cubic root of 57620865 is about 386.2423800091.

It can be divided in two parts, 57620 and 865, that added together give a palindrome (58485).

The spelling of 57620865 in words is "fifty-seven million, six hundred twenty thousand, eight hundred sixty-five".