668000000899 has 16 divisors (see below), whose sum is σ = 832902946560. Its totient is φ = 520474620960.

The previous prime is 668000000891. The next prime is 668000000903. The reversal of 668000000899 is 998000000866.

It is a happy number.

It is not a de Polignac number, because 668000000899 - 2³ = 668000000891 is a prime.

668000000899 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668000000891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539812 + ... + 1275694.

It is an arithmetic number, because the mean of its divisors is an integer number (52056434160).

Almost surely, 2^668000000899 is an apocalyptic number.

668000000899 is a deficient number, since it is larger than the sum of its proper divisors (164902945661).

668000000899 is a wasteful number, since it uses less digits than its factorization.

668000000899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747690.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 668000000899 in words is "six hundred sixty-eight billion, eight hundred ninety-nine", and thus it is an aban number.