786806400660 has 48 divisors (see below), whose sum is σ = 2517780483456. Its totient is φ = 179841462912.

The previous prime is 786806400659. The next prime is 786806400671. The reversal of 786806400660 is 66004608687.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 936673867 + ... + 936674706.

It is an arithmetic number, because the mean of its divisors is an integer number (52453760072).

Almost surely, 2^786806400660 is an apocalyptic number.

786806400660 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

786806400660 is an abundant number, since it is smaller than the sum of its proper divisors (1730974082796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

786806400660 is a wasteful number, since it uses less digits than its factorization.

786806400660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873348592 (or 1873348590 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 786806400660 in words is "seven hundred eighty-six billion, eight hundred six million, four hundred thousand, six hundred sixty".