664590352 has 10 divisors (see below), whose sum is σ = 1287643838. Its totient is φ = 332295168.

The previous prime is 664590349. The next prime is 664590371. The reversal of 664590352 is 253095466.

It can be written as a sum of positive squares in only one way, i.e., 663371536 + 1218816 = 25756^2 + 1104^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20768433 + ... + 20768464.

Almost surely, 2^664590352 is an apocalyptic number.

It is an amenable number.

664590352 is a deficient number, since it is larger than the sum of its proper divisors (623053486).

664590352 is a wasteful number, since it uses less digits than its factorization.

664590352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41536905 (or 41536899 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 664590352 is about 25779.6499588338. The cubic root of 664590352 is about 872.6726076187.

The spelling of 664590352 in words is "six hundred sixty-four million, five hundred ninety thousand, three hundred fifty-two".