513600664 has 24 divisors (see below), whose sum is σ = 979653060. Its totient is φ = 252434096.

The previous prime is 513600629. The next prime is 513600667. The reversal of 513600664 is 466006315.

It is a super-2 number, since 2×513600664² = 527571284122481792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513600667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18627 + ... + 37069.

Almost surely, 2^513600664 is an apocalyptic number.

It is an amenable number.

513600664 is a deficient number, since it is larger than the sum of its proper divisors (466052396).

513600664 is a wasteful number, since it uses less digits than its factorization.

513600664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18567 (or 18504 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 513600664 is about 22662.7594083333. The cubic root of 513600664 is about 800.8328118963.

Adding to 513600664 its reverse (466006315), we get a palindrome (979606979).

The spelling of 513600664 in words is "five hundred thirteen million, six hundred thousand, six hundred sixty-four".