688489500 has 48 divisors (see below), whose sum is σ = 2004885792. Its totient is φ = 183596800.

The previous prime is 688489489. The next prime is 688489513. The reversal of 688489500 is 5984886.

It is a super-2 number, since 2×688489500² = 948035583220500000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 688489500.

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, 227997 + ... + 230996.

It is an arithmetic number, because the mean of its divisors is an integer number (41768454).

Almost surely, 2^688489500 is an apocalyptic number.

688489500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

688489500 is an abundant number, since it is smaller than the sum of its proper divisors (1316396292).

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

688489500 is a wasteful number, since it uses less digits than its factorization.

688489500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459015 (or 459003 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 688489500 is about 26239.0834443583. The cubic root of 688489500 is about 883.0103086908.

The spelling of 688489500 in words is "six hundred eighty-eight million, four hundred eighty-nine thousand, five hundred".