664470357 has 16 divisors (see below), whose sum is σ = 909480000. Its totient is φ = 431286912.

The previous prime is 664470311. The next prime is 664470419. The reversal of 664470357 is 753074466.

It is a happy number.

664470357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664470357 - 2⁷ = 664470229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664470307) 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, 32769 + ... + 49017.

It is an arithmetic number, because the mean of its divisors is an integer number (56842500).

Almost surely, 2^664470357 is an apocalyptic number.

It is an amenable number.

664470357 is a deficient number, since it is larger than the sum of its proper divisors (245009643).

664470357 is a wasteful number, since it uses less digits than its factorization.

664470357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16612.

The product of its (nonzero) digits is 423360, while the sum is 42.

The square root of 664470357 is about 25777.3225335759. The cubic root of 664470357 is about 872.6200827051.

The spelling of 664470357 in words is "six hundred sixty-four million, four hundred seventy thousand, three hundred fifty-seven".