66923192 has 64 divisors (see below), whose sum is σ = 150958080. Its totient is φ = 27194112.

The previous prime is 66923183. The next prime is 66923209. The reversal of 66923192 is 29132966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287108 + ... + 287340.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^66923192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66923192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75479040).

66923192 is an abundant number, since it is smaller than the sum of its proper divisors (84034888).

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

66923192 is a wasteful number, since it uses less digits than its factorization.

66923192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 488 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 66923192 is about 8180.6596311056. The cubic root of 66923192 is about 405.9995470240. Note that the first 3 decimals are identical.

The spelling of 66923192 in words is "sixty-six million, nine hundred twenty-three thousand, one hundred ninety-two".