688819376320 has 28 divisors (see below), whose sum is σ = 1640251140624. Its totient is φ = 275527750400.

The previous prime is 688819376293. The next prime is 688819376339. The reversal of 688819376320 is 23673918886.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1076279956 + ... + 1076280595.

Almost surely, 2^688819376320 is an apocalyptic number.

It is an amenable number.

688819376320 is an abundant number, since it is smaller than the sum of its proper divisors (951431764304).

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

688819376320 is a wasteful number, since it uses less digits than its factorization.

688819376320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152560568 (or 2152560558 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 688819376320 in words is "six hundred eighty-eight billion, eight hundred nineteen million, three hundred seventy-six thousand, three hundred twenty".