687424672 has 24 divisors (see below), whose sum is σ = 1476401472. Its totient is φ = 312465600.

The previous prime is 687424663. The next prime is 687424687. The reversal of 687424672 is 276424786.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976104 + ... + 976807.

It is an arithmetic number, because the mean of its divisors is an integer number (61516728).

Almost surely, 2^687424672 is an apocalyptic number.

It is an amenable number.

687424672 is an abundant number, since it is smaller than the sum of its proper divisors (788976800).

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

687424672 is a wasteful number, since it uses less digits than its factorization.

687424672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952932 (or 1952924 counting only the distinct ones).

The product of its digits is 903168, while the sum is 46.

The square root of 687424672 is about 26218.7847163060. The cubic root of 687424672 is about 882.5548482203.

The spelling of 687424672 in words is "six hundred eighty-seven million, four hundred twenty-four thousand, six hundred seventy-two".