688206860080 has 40 divisors (see below), whose sum is σ = 1600122585600. Its totient is φ = 275275580928.

The previous prime is 688206860069. The next prime is 688206860123. The reversal of 688206860080 is 80068602886.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×688206860080² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3855036 + ... + 4029604.

It is an arithmetic number, because the mean of its divisors is an integer number (40003064640).

Almost surely, 2^688206860080 is an apocalyptic number.

It is an amenable number.

688206860080 is an abundant number, since it is smaller than the sum of its proper divisors (911915725520).

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

688206860080 is a wasteful number, since it uses less digits than its factorization.

688206860080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223861 (or 223855 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 52.

The spelling of 688206860080 in words is "six hundred eighty-eight billion, two hundred six million, eight hundred sixty thousand, eighty".