688679484427 has 12 divisors (see below), whose sum is σ = 757093213408. Its totient is φ = 625977198000.

The previous prime is 688679484421. The next prime is 688679484433. The reversal of 688679484427 is 724484976886.

688679484427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (688679484421) and next prime (688679484433).

It is not a de Polignac number, because 688679484427 - 2³¹ = 686532000779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 688679484427.

It is not an unprimeable number, because it can be changed into a prime (688679484421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 374302 + ... + 1231852.

Almost surely, 2^688679484427 is an apocalyptic number.

688679484427 is a deficient number, since it is larger than the sum of its proper divisors (68413728981).

688679484427 is a wasteful number, since it uses less digits than its factorization.

688679484427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864210 (or 864199 counting only the distinct ones).

The product of its digits is 1040449536, while the sum is 73.

The spelling of 688679484427 in words is "six hundred eighty-eight billion, six hundred seventy-nine million, four hundred eighty-four thousand, four hundred twenty-seven".