699225988 has 6 divisors (see below), whose sum is σ = 1223645486. Its totient is φ = 349612992.

The previous prime is 699225977. The next prime is 699226001. The reversal of 699225988 is 889522996.

It is a happy number.

699225988 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 only one way, i.e., 575616064 + 123609924 = 23992^2 + 11118^2 .

It is a super-2 number, since 2×699225988² = 977833964589152288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87403245 + ... + 87403252.

Almost surely, 2^699225988 is an apocalyptic number.

It is an amenable number.

699225988 is a deficient number, since it is larger than the sum of its proper divisors (524419498).

699225988 is a wasteful number, since it uses less digits than its factorization.

699225988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174806501 (or 174806499 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 58.

The square root of 699225988 is about 26442.8816130164. The cubic root of 699225988 is about 887.5766199274.

The spelling of 699225988 in words is "six hundred ninety-nine million, two hundred twenty-five thousand, nine hundred eighty-eight".