699669988 has 6 divisors (see below), whose sum is σ = 1224422486. Its totient is φ = 349834992.

The previous prime is 699669973. The next prime is 699669989. The reversal of 699669988 is 889966996.

699669988 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., 625400064 + 74269924 = 25008^2 + 8618^2 .

It is a super-3 number, since 3×699669988³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (699669989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87458745 + ... + 87458752.

Almost surely, 2^699669988 is an apocalyptic number.

It is an amenable number.

699669988 is a deficient number, since it is larger than the sum of its proper divisors (524752498).

699669988 is a wasteful number, since it uses less digits than its factorization.

699669988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174917501 (or 174917499 counting only the distinct ones).

The product of its digits is 90699264, while the sum is 70.

The square root of 699669988 is about 26451.2757348299. The cubic root of 699669988 is about 887.7644469640.

The spelling of 699669988 in words is "six hundred ninety-nine million, six hundred sixty-nine thousand, nine hundred eighty-eight".