786806802664 has 8 divisors (see below), whose sum is σ = 1475262755010. Its totient is φ = 393403401328.

The previous prime is 786806802623. The next prime is 786806802721. The reversal of 786806802664 is 466208608687.

It can be written as a sum of positive squares in only one way, i.e., 442413880164 + 344392922500 = 665142^2 + 586850^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49175425159 + ... + 49175425174.

Almost surely, 2^786806802664 is an apocalyptic number.

It is an amenable number.

786806802664 is a deficient number, since it is larger than the sum of its proper divisors (688455952346).

786806802664 is a wasteful number, since it uses less digits than its factorization.

786806802664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98350850339 (or 98350850335 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 61.

The spelling of 786806802664 in words is "seven hundred eighty-six billion, eight hundred six million, eight hundred two thousand, six hundred sixty-four".