3664857 has 24 divisors (see below), whose sum is σ = 5762016. Its totient is φ = 2065728.

The previous prime is 3664841. The next prime is 3664861. The reversal of 3664857 is 7584663.

It is not a de Polignac number, because 3664857 - 2⁴ = 3664841 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 6⁵ + 6⁸ + 4⁶ + 8³ + 5⁹ + 7² .

It is not an unprimeable number, because it can be changed into a prime (3664057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15613 + ... + 15845.

It is an arithmetic number, because the mean of its divisors is an integer number (240084).

Almost surely, 2^3664857 is an apocalyptic number.

It is an amenable number.

3664857 is a deficient number, since it is larger than the sum of its proper divisors (2097159).

3664857 is a wasteful number, since it uses less digits than its factorization.

3664857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 350 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 3664857 is about 1914.3816233970. The cubic root of 3664857 is about 154.1767942052.

The spelling of 3664857 in words is "three million, six hundred sixty-four thousand, eight hundred fifty-seven".