66423196 has 12 divisors (see below), whose sum is σ = 132846448. Its totient is φ = 28467072.

The previous prime is 66423193. The next prime is 66423263. The reversal of 66423196 is 69132466.

It is a happy number.

66423196 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 1186101 + ... + 1186156.

Almost surely, 2^66423196 is an apocalyptic number.

It is an amenable number.

66423196 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66423196 is a wasteful number, since it uses less digits than its factorization.

66423196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372268 (or 2372266 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 66423196 is about 8150.0426992746. The cubic root of 66423196 is about 404.9859183236.

The spelling of 66423196 in words is "sixty-six million, four hundred twenty-three thousand, one hundred ninety-six".