57906865 has 4 divisors (see below), whose sum is σ = 69488244. Its totient is φ = 46325488.

The previous prime is 57906833. The next prime is 57906917. The reversal of 57906865 is 56860975.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43678881 + 14227984 = 6609^2 + 3772^2 .

It is a cyclic number.

It is not a de Polignac number, because 57906865 - 2⁵ = 57906833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5790682 + ... + 5790691.

It is an arithmetic number, because the mean of its divisors is an integer number (17372061).

Almost surely, 2^57906865 is an apocalyptic number.

It is an amenable number.

57906865 is a deficient number, since it is larger than the sum of its proper divisors (11581379).

57906865 is a wasteful number, since it uses less digits than its factorization.

57906865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11581378.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 57906865 is about 7609.6560369047. The cubic root of 57906865 is about 386.8803610533.

The spelling of 57906865 in words is "fifty-seven million, nine hundred six thousand, eight hundred sixty-five".