513361664 has 18 divisors (see below), whose sum is σ = 1024718520. Its totient is φ = 256680704.

The previous prime is 513361661. The next prime is 513361669. The reversal of 513361664 is 466163315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513361661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002404 + ... + 1002915.

Almost surely, 2^513361664 is an apocalyptic number.

It is an amenable number.

513361664 is a deficient number, since it is larger than the sum of its proper divisors (511356856).

513361664 is an equidigital number, since it uses as much as digits as its factorization.

513361664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005335 (or 2005321 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 513361664 is about 22657.4858269844. The cubic root of 513361664 is about 800.7085722215.

The spelling of 513361664 in words is "five hundred thirteen million, three hundred sixty-one thousand, six hundred sixty-four".