688855806922 has 8 divisors (see below), whose sum is σ = 1066615443072. Its totient is φ = 333317325900.

The previous prime is 688855806913. The next prime is 688855806931. The reversal of 688855806922 is 229608558886.

It is an interprime number because it is at equal distance from previous prime (688855806913) and next prime (688855806931).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×688855806922² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555288704 + ... + 5555288827.

It is an arithmetic number, because the mean of its divisors is an integer number (133326930384).

Almost surely, 2^688855806922 is an apocalyptic number.

688855806922 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

688855806922 is a deficient number, since it is larger than the sum of its proper divisors (377759636150).

688855806922 is a wasteful number, since it uses less digits than its factorization.

688855806922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110577564.

The product of its (nonzero) digits is 132710400, while the sum is 67.

The spelling of 688855806922 in words is "six hundred eighty-eight billion, eight hundred fifty-five million, eight hundred six thousand, nine hundred twenty-two".