513684644 has 24 divisors (see below), whose sum is σ = 981475488. Its totient is φ = 233301440.

The previous prime is 513684641. The next prime is 513684671. The reversal of 513684644 is 446486315.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (513684641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58979 + ... + 67125.

It is an arithmetic number, because the mean of its divisors is an integer number (40894812).

Almost surely, 2^513684644 is an apocalyptic number.

It is an amenable number.

513684644 is a deficient number, since it is larger than the sum of its proper divisors (467790844).

513684644 is a wasteful number, since it uses less digits than its factorization.

513684644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9595 (or 9593 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 513684644 is about 22664.6121519871. The cubic root of 513684644 is about 800.8764581757.

The spelling of 513684644 in words is "five hundred thirteen million, six hundred eighty-four thousand, six hundred forty-four".