672307688 has 24 divisors (see below), whose sum is σ = 1365006150. Its totient is φ = 310295232.

The previous prime is 672307673. The next prime is 672307739. The reversal of 672307688 is 886703276.

It can be written as a sum of positive squares in 3 ways, for example, as 110712484 + 561595204 = 10522^2 + 23698^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 247283 + ... + 249986.

Almost surely, 2^672307688 is an apocalyptic number.

It is an amenable number.

672307688 is an abundant number, since it is smaller than the sum of its proper divisors (692698462).

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

672307688 is a wasteful number, since it uses less digits than its factorization.

672307688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497301 (or 497284 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 672307688 is about 25928.8967756054. The cubic root of 672307688 is about 876.0374906635.

The spelling of 672307688 in words is "six hundred seventy-two million, three hundred seven thousand, six hundred eighty-eight".