688913472 has 56 divisors (see below), whose sum is σ = 1962968896. Its totient is φ = 211972608.

The previous prime is 688913453. The next prime is 688913479. The reversal of 688913472 is 274319886.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (688913479) 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, 135508 + ... + 140499.

It is an arithmetic number, because the mean of its divisors is an integer number (35053016).

Almost surely, 2^688913472 is an apocalyptic number.

It is an amenable number.

688913472 is an abundant number, since it is smaller than the sum of its proper divisors (1274055424).

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

688913472 is a wasteful number, since it uses less digits than its factorization.

688913472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276035 (or 276025 counting only the distinct ones).

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

The square root of 688913472 is about 26247.1612179298. The cubic root of 688913472 is about 883.1915241520.

The spelling of 688913472 in words is "six hundred eighty-eight million, nine hundred thirteen thousand, four hundred seventy-two".