513678812 has 6 divisors (see below), whose sum is σ = 898937928. Its totient is φ = 256839404.

The previous prime is 513678793. The next prime is 513678821. The reversal of 513678812 is 218876315.

It is a self number, because there is not a number n which added to its sum of digits gives 513678812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64209848 + ... + 64209855.

It is an arithmetic number, because the mean of its divisors is an integer number (149822988).

Almost surely, 2^513678812 is an apocalyptic number.

It is an amenable number.

513678812 is a deficient number, since it is larger than the sum of its proper divisors (385259116).

513678812 is a wasteful number, since it uses less digits than its factorization.

513678812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128419707 (or 128419705 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 513678812 is about 22664.4834929014. The cubic root of 513678812 is about 800.8734273089.

The spelling of 513678812 in words is "five hundred thirteen million, six hundred seventy-eight thousand, eight hundred twelve".