699408768 has 32 divisors (see below), whose sum is σ = 1857805560. Its totient is φ = 233136128.

The previous prime is 699408761. The next prime is 699408799. The reversal of 699408768 is 867804996.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699408761) 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, 910305 + ... + 911072.

Almost surely, 2^699408768 is an apocalyptic number.

It is an amenable number.

699408768 is an abundant number, since it is smaller than the sum of its proper divisors (1158396792).

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

699408768 is a wasteful number, since it uses less digits than its factorization.

699408768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821394 (or 1821382 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The square root of 699408768 is about 26446.3375158074. The cubic root of 699408768 is about 887.6539516835.

The spelling of 699408768 in words is "six hundred ninety-nine million, four hundred eight thousand, seven hundred sixty-eight".