699640860 has 96 divisors (see below), whose sum is σ = 2028902400. Its totient is φ = 179953920.

The previous prime is 699640859. The next prime is 699640889. The reversal of 699640860 is 68046996.

699640860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 946371 + ... + 947109.

It is an arithmetic number, because the mean of its divisors is an integer number (21134400).

Almost surely, 2^699640860 is an apocalyptic number.

699640860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699640860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1014451200).

699640860 is an abundant number, since it is smaller than the sum of its proper divisors (1329261540).

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

699640860 is a wasteful number, since it uses less digits than its factorization.

699640860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291 (or 1289 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 699640860 is about 26450.7251318371. The cubic root of 699640860 is about 887.7521272695.

The spelling of 699640860 in words is "six hundred ninety-nine million, six hundred forty thousand, eight hundred sixty".