688983389886 has 32 divisors (see below), whose sum is σ = 1503476494848. Its totient is φ = 208749511040.

The previous prime is 688983389837. The next prime is 688983389891.

688983389886 is nontrivially palindromic in base 10.

688983389886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×688983389886² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 688983389799 and 688983389808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415275 + ... + 1245158.

It is an arithmetic number, because the mean of its divisors is an integer number (46983640464).

Almost surely, 2^688983389886 is an apocalyptic number.

688983389886 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

688983389886 is an abundant number, since it is smaller than the sum of its proper divisors (814493104962).

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

688983389886 is a wasteful number, since it uses less digits than its factorization.

688983389886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666736.

The product of its digits is 6879707136, while the sum is 84.

The spelling of 688983389886 in words is "six hundred eighty-eight billion, nine hundred eighty-three million, three hundred eighty-nine thousand, eight hundred eighty-six".