668854092 has 12 divisors (see below), whose sum is σ = 1560659576. Its totient is φ = 222951360.

The previous prime is 668854063. The next prime is 668854127. The reversal of 668854092 is 290458866.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27868909 + ... + 27868932.

Almost surely, 2^668854092 is an apocalyptic number.

It is an amenable number.

668854092 is an abundant number, since it is smaller than the sum of its proper divisors (891805484).

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

668854092 is a wasteful number, since it uses less digits than its factorization.

668854092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55737848 (or 55737846 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 668854092 is about 25862.2135943542. The cubic root of 668854092 is about 874.5348676732.

The spelling of 668854092 in words is "six hundred sixty-eight million, eight hundred fifty-four thousand, ninety-two".