699531868 has 12 divisors (see below), whose sum is σ = 1399063792. Its totient is φ = 299799360.

The previous prime is 699531863. The next prime is 699531919. The reversal of 699531868 is 868135996.

It is a happy number.

699531868 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699531863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12491613 + ... + 12491668.

Almost surely, 2^699531868 is an apocalyptic number.

It is an amenable number.

699531868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

699531868 is a wasteful number, since it uses less digits than its factorization.

699531868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24983292 (or 24983290 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 55.

The square root of 699531868 is about 26448.6647678101. The cubic root of 699531868 is about 887.7060260432.

The spelling of 699531868 in words is "six hundred ninety-nine million, five hundred thirty-one thousand, eight hundred sixty-eight".