899808668 has 24 divisors (see below), whose sum is σ = 1792506240. Its totient is φ = 391220720.

The previous prime is 899808667. The next prime is 899808671. The reversal of 899808668 is 866808998.

It is a happy number.

899808668 is a strobogrammatic number because it is the same when read upside-down.

It is a self number, because there is not a number n which added to its sum of digits gives 899808668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899808667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443558 + ... + 445581.

It is an arithmetic number, because the mean of its divisors is an integer number (74687760).

Almost surely, 2^899808668 is an apocalyptic number.

It is an amenable number.

899808668 is a deficient number, since it is larger than the sum of its proper divisors (892697572).

899808668 is a wasteful number, since it uses less digits than its factorization.

899808668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889177 (or 889175 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 62.

The square root of 899808668 is about 29996.8109638341. The cubic root of 899808668 is about 965.4209616030.

The spelling of 899808668 in words is "eight hundred ninety-nine million, eight hundred eight thousand, six hundred sixty-eight".