996786585664 has 21 divisors (see below), whose sum is σ = 1978014230527. Its totient is φ = 498389299264.

The previous prime is 996786585647. The next prime is 996786585673. The reversal of 996786585664 is 466585687699.

The square root of 996786585664 is 998392.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7924737 + ... + 8049535.

Almost surely, 2^996786585664 is an apocalyptic number.

996786585664 is the 998392-nd square number.

It is an amenable number.

996786585664 is a deficient number, since it is larger than the sum of its proper divisors (981227644863).

996786585664 is an frugal number, since it uses more digits than its factorization.

996786585664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249610 (or 124801 counting only the distinct ones).

The product of its digits is 4702924800, while the sum is 79.

The spelling of 996786585664 in words is "nine hundred ninety-six billion, seven hundred eighty-six million, five hundred eighty-five thousand, six hundred sixty-four".