699642368 has 40 divisors (see below), whose sum is σ = 1432056780. Its totient is φ = 341278720.

The previous prime is 699642323. The next prime is 699642373. The reversal of 699642368 is 863246996.

It can be written as a sum of positive squares in 2 ways, for example, as 677665024 + 21977344 = 26032^2 + 4688^2 .

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, 4328 + ... + 37656.

Almost surely, 2^699642368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699642368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716028390).

699642368 is an abundant number, since it is smaller than the sum of its proper divisors (732414412).

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

699642368 is an equidigital number, since it uses as much as digits as its factorization.

699642368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33388 (or 33372 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 53.

The square root of 699642368 is about 26450.7536376565. The cubic root of 699642368 is about 887.7527650868.

The spelling of 699642368 in words is "six hundred ninety-nine million, six hundred forty-two thousand, three hundred sixty-eight".