699855680 has 28 divisors (see below), whose sum is σ = 1666532100. Its totient is φ = 279942144.

The previous prime is 699855641. The next prime is 699855701. The reversal of 699855680 is 86558996.

699855680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 216207616 + 483648064 = 14704^2 + 21992^2 .

It is a congruent number.

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, 1093205 + ... + 1093844.

Almost surely, 2^699855680 is an apocalyptic number.

It is an amenable number.

699855680 is an abundant number, since it is smaller than the sum of its proper divisors (966676420).

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

699855680 is a wasteful number, since it uses less digits than its factorization.

699855680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187066 (or 2187056 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 56.

The square root of 699855680 is about 26454.7855784166. The cubic root of 699855680 is about 887.8429774031.

The spelling of 699855680 in words is "six hundred ninety-nine million, eight hundred fifty-five thousand, six hundred eighty".