687102912 has 112 divisors (see below), whose sum is σ = 2045309600. Its totient is φ = 228987648.

The previous prime is 687102907. The next prime is 687102929. The reversal of 687102912 is 219201786.

It is a super-2 number, since 2×687102912² = 944220823357759488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 137514 + ... + 142422.

Almost surely, 2^687102912 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 687102912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1022654800).

687102912 is an abundant number, since it is smaller than the sum of its proper divisors (1358206688).

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

687102912 is an frugal number, since it uses more digits than its factorization.

687102912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942 (or 4914 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 687102912 is about 26212.6479394967. The cubic root of 687102912 is about 882.4171288081.

The spelling of 687102912 in words is "six hundred eighty-seven million, one hundred two thousand, nine hundred twelve".