688425996 has 24 divisors (see below), whose sum is σ = 1649742640. Its totient is φ = 223273152.

The previous prime is 688425977. The next prime is 688426009. The reversal of 688425996 is 699524886.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774811 + ... + 775698.

Almost surely, 2^688425996 is an apocalyptic number.

It is an amenable number.

688425996 is an abundant number, since it is smaller than the sum of its proper divisors (961316644).

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

688425996 is a wasteful number, since it uses less digits than its factorization.

688425996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550553 (or 1550551 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The square root of 688425996 is about 26237.8733132089. The cubic root of 688425996 is about 882.9831592035.

The spelling of 688425996 in words is "six hundred eighty-eight million, four hundred twenty-five thousand, nine hundred ninety-six".