688580012 has 12 divisors (see below), whose sum is σ = 1206929136. Its totient is φ = 343743120.

The previous prime is 688579981. The next prime is 688580023. The reversal of 688580012 is 210085886.

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, 133883 + ... + 138930.

It is an arithmetic number, because the mean of its divisors is an integer number (100577428).

Almost surely, 2^688580012 is an apocalyptic number.

It is an amenable number.

688580012 is a deficient number, since it is larger than the sum of its proper divisors (518349124).

688580012 is a wasteful number, since it uses less digits than its factorization.

688580012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273448 (or 273446 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 688580012 is about 26240.8081430432. The cubic root of 688580012 is about 883.0490018623.

The spelling of 688580012 in words is "six hundred eighty-eight million, five hundred eighty thousand, twelve".