668064192 has 56 divisors (see below), whose sum is σ = 1796594832. Its totient is φ = 219033600.

The previous prime is 668064151. The next prime is 668064203. The reversal of 668064192 is 291460866.

668064192 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×668064192² = 892619529265225728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16809 + ... + 40232.

Almost surely, 2^668064192 is an apocalyptic number.

It is an amenable number.

668064192 is an abundant number, since it is smaller than the sum of its proper divisors (1128530640).

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

668064192 is a wasteful number, since it uses less digits than its factorization.

668064192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57117 (or 57107 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 668064192 is about 25846.9377683315. The cubic root of 668064192 is about 874.1904641050.

The spelling of 668064192 in words is "six hundred sixty-eight million, sixty-four thousand, one hundred ninety-two".