687934368 has 216 divisors, whose sum is σ = 2265681600. Its totient is φ = 197303040.

The previous prime is 687934337. The next prime is 687934381. The reversal of 687934368 is 863439786.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 661593 + ... + 662631.

Almost surely, 2^687934368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687934368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132840800).

687934368 is an abundant number, since it is smaller than the sum of its proper divisors (1577747232).

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

687934368 is a wasteful number, since it uses less digits than its factorization.

687934368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1074 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 687934368 is about 26228.5029690983. The cubic root of 687934368 is about 882.7729198929.

The spelling of 687934368 in words is "six hundred eighty-seven million, nine hundred thirty-four thousand, three hundred sixty-eight".