66192868 has 24 divisors (see below), whose sum is σ = 132558272. Its totient is φ = 28331424.

The previous prime is 66192853. The next prime is 66192881. The reversal of 66192868 is 86829166.

66192868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39871 + ... + 41497.

Almost surely, 2^66192868 is an apocalyptic number.

It is an amenable number.

66192868 is an abundant number, since it is smaller than the sum of its proper divisors (66365404).

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

66192868 is a wasteful number, since it uses less digits than its factorization.

66192868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091 (or 3089 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 66192868 is about 8135.8999502206. The cubic root of 66192868 is about 404.5172686717.

The spelling of 66192868 in words is "sixty-six million, one hundred ninety-two thousand, eight hundred sixty-eight".