664362407 has 16 divisors (see below), whose sum is σ = 688955904. Its totient is φ = 640332000.

The previous prime is 664362403. The next prime is 664362449. The reversal of 664362407 is 704263466.

It is a cyclic number.

It is not a de Polignac number, because 664362407 - 2² = 664362403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664362403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913478 + ... + 914204.

It is an arithmetic number, because the mean of its divisors is an integer number (43059744).

Almost surely, 2^664362407 is an apocalyptic number.

664362407 is a deficient number, since it is larger than the sum of its proper divisors (24593497).

664362407 is a wasteful number, since it uses less digits than its factorization.

664362407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070.

The product of its (nonzero) digits is 145152, while the sum is 38.

The square root of 664362407 is about 25775.2285537878. The cubic root of 664362407 is about 872.5728247958.

The spelling of 664362407 in words is "six hundred sixty-four million, three hundred sixty-two thousand, four hundred seven".