687043008 has 84 divisors (see below), whose sum is σ = 1978967848. Its totient is φ = 227888640.

The previous prime is 687042989. The next prime is 687043037. The reversal of 687043008 is 800340786.

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 11 ways as a sum of consecutive naturals, for example, 118710 + ... + 124362.

Almost surely, 2^687043008 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 687043008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989483924).

687043008 is an abundant number, since it is smaller than the sum of its proper divisors (1291924840).

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

687043008 is a wasteful number, since it uses less digits than its factorization.

687043008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882 (or 5869 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 687043008 is about 26211.5052600952. The cubic root of 687043008 is about 882.3914840073.

The spelling of 687043008 in words is "six hundred eighty-seven million, forty-three thousand, eight".