66374056 has 32 divisors (see below), whose sum is σ = 144648000. Its totient is φ = 27962496.

The previous prime is 66374023. The next prime is 66374057. The reversal of 66374056 is 65047366.

It is a super-2 number, since 2×66374056² = 8811030619782272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66374057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6741 + ... + 13348.

It is an arithmetic number, because the mean of its divisors is an integer number (4520250).

Almost surely, 2^66374056 is an apocalyptic number.

It is an amenable number.

66374056 is an abundant number, since it is smaller than the sum of its proper divisors (78273944).

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

66374056 is a wasteful number, since it uses less digits than its factorization.

66374056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20161 (or 20157 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 66374056 is about 8147.0274333649. The cubic root of 66374056 is about 404.8860239150.

The spelling of 66374056 in words is "sixty-six million, three hundred seventy-four thousand, fifty-six".