687472112 has 40 divisors (see below), whose sum is σ = 1422873216. Its totient is φ = 320638976.

The previous prime is 687472103. The next prime is 687472127. The reversal of 687472112 is 211274786.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19553 + ... + 41919.

Almost surely, 2^687472112 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 687472112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711436608).

687472112 is an abundant number, since it is smaller than the sum of its proper divisors (735401104).

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

687472112 is a wasteful number, since it uses less digits than its factorization.

687472112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22505 (or 22499 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 687472112 is about 26219.6893955668. The cubic root of 687472112 is about 882.5751498090.

The spelling of 687472112 in words is "six hundred eighty-seven million, four hundred seventy-two thousand, one hundred twelve".