664365476 has 48 divisors (see below), whose sum is σ = 1266693120. Its totient is φ = 303840000.

The previous prime is 664365467. The next prime is 664365497. The reversal of 664365476 is 674563466.

664365476 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 664365476.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313661 + ... + 315771.

It is an arithmetic number, because the mean of its divisors is an integer number (26389440).

Almost surely, 2^664365476 is an apocalyptic number.

It is an amenable number.

664365476 is a deficient number, since it is larger than the sum of its proper divisors (602327644).

664365476 is a wasteful number, since it uses less digits than its factorization.

664365476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276 (or 2274 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 47.

The square root of 664365476 is about 25775.2880876238. The cubic root of 664365476 is about 872.5741684007.

The spelling of 664365476 in words is "six hundred sixty-four million, three hundred sixty-five thousand, four hundred seventy-six".