688485070 has 64 divisors (see below), whose sum is σ = 1536514560. Its totient is φ = 216286848.

The previous prime is 688485053. The next prime is 688485089. The reversal of 688485070 is 70584886.

688485070 is nontrivially palindromic in base 9.

It is a super-2 number, since 2×688485070² = 948023383225809800, which contains 22 as substring.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 688485070 = 27³ + 883³ = 631³ + 759³.

It is a self number, because there is not a number n which added to its sum of digits gives 688485070.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123769 + ... + 129211.

It is an arithmetic number, because the mean of its divisors is an integer number (24008040).

Almost surely, 2^688485070 is an apocalyptic number.

688485070 is an abundant number, since it is smaller than the sum of its proper divisors (848029490).

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

688485070 is a wasteful number, since it uses less digits than its factorization.

688485070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609.

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 688485070 is about 26238.9990281642. Note that the first 3 decimals coincide. The cubic root of 688485070 is about 883.0084148134.

The spelling of 688485070 in words is "six hundred eighty-eight million, four hundred eighty-five thousand, seventy".