688885472 has 48 divisors (see below), whose sum is σ = 1527289344. Its totient is φ = 303024000.

The previous prime is 688885471. The next prime is 688885487. The reversal of 688885472 is 274588886.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688885471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20654 + ... + 42477.

It is an arithmetic number, because the mean of its divisors is an integer number (31818528).

Almost surely, 2^688885472 is an apocalyptic number.

688885472 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

688885472 is an abundant number, since it is smaller than the sum of its proper divisors (838403872).

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

688885472 is a wasteful number, since it uses less digits than its factorization.

688885472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63183 (or 63175 counting only the distinct ones).

The product of its digits is 6881280, while the sum is 56.

The square root of 688885472 is about 26246.6278214936. The cubic root of 688885472 is about 883.1795585962.

The spelling of 688885472 in words is "six hundred eighty-eight million, eight hundred eighty-five thousand, four hundred seventy-two".