66423192 has 96 divisors (see below), whose sum is σ = 185295600. Its totient is φ = 19824640.

The previous prime is 66423179. The next prime is 66423193. The reversal of 66423192 is 29132466.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66423193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 258328 + ... + 258584.

Almost surely, 2^66423192 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 66423192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92647800).

66423192 is an abundant number, since it is smaller than the sum of its proper divisors (118872408).

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

66423192 is a wasteful number, since it uses less digits than its factorization.

66423192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 362 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 66423192 is about 8150.0424538772. The cubic root of 66423192 is about 404.9859101942.

The spelling of 66423192 in words is "sixty-six million, four hundred twenty-three thousand, one hundred ninety-two".