688973412 has 12 divisors (see below), whose sum is σ = 1607604656. Its totient is φ = 229657800.

The previous prime is 688973407. The next prime is 688973429. The reversal of 688973412 is 214379886.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×688973412³ (a number of 27 digits) contains 333 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, 28707214 + ... + 28707237.

Almost surely, 2^688973412 is an apocalyptic number.

It is an amenable number.

688973412 is an abundant number, since it is smaller than the sum of its proper divisors (918631244).

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

688973412 is a wasteful number, since it uses less digits than its factorization.

688973412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57414458 (or 57414456 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 688973412 is about 26248.3030308628. The cubic root of 688973412 is about 883.2171378983.

The spelling of 688973412 in words is "six hundred eighty-eight million, nine hundred seventy-three thousand, four hundred twelve".