688002056 has 32 divisors (see below), whose sum is σ = 1475772480. Its totient is φ = 294561600.

The previous prime is 688002047. The next prime is 688002067. The reversal of 688002056 is 650200886.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55466 + ... + 66726.

It is an arithmetic number, because the mean of its divisors is an integer number (46117890).

Almost surely, 2^688002056 is an apocalyptic number.

It is an amenable number.

688002056 is an abundant number, since it is smaller than the sum of its proper divisors (787770424).

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

688002056 is a wasteful number, since it uses less digits than its factorization.

688002056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12365 (or 12361 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 688002056 is about 26229.7932893113. The cubic root of 688002056 is about 882.8018718668.

The spelling of 688002056 in words is "six hundred eighty-eight million, two thousand, fifty-six".