513322664 has 16 divisors (see below), whose sum is σ = 964548000. Its totient is φ = 256109872.

The previous prime is 513322637. The next prime is 513322709. The reversal of 513322664 is 466223315.

It is a self number, because there is not a number n which added to its sum of digits gives 513322664.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64964 + ... + 72435.

It is an arithmetic number, because the mean of its divisors is an integer number (60284250).

Almost surely, 2^513322664 is an apocalyptic number.

It is an amenable number.

513322664 is a deficient number, since it is larger than the sum of its proper divisors (451225336).

513322664 is a wasteful number, since it uses less digits than its factorization.

513322664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137872 (or 137868 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 513322664 is about 22656.6251679283. The cubic root of 513322664 is about 800.6882951424.

Adding to 513322664 its reverse (466223315), we get a palindrome (979545979).

The spelling of 513322664 in words is "five hundred thirteen million, three hundred twenty-two thousand, six hundred sixty-four".