66185472 has 36 divisors (see below), whose sum is σ = 176151920. Its totient is φ = 22061568.

The previous prime is 66185443. The next prime is 66185491. The reversal of 66185472 is 27458166.

It is a self number, because there is not a number n which added to its sum of digits gives 66185472.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42322 + ... + 43857.

Almost surely, 2^66185472 is an apocalyptic number.

It is an amenable number.

66185472 is an abundant number, since it is smaller than the sum of its proper divisors (109966448).

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

66185472 is an equidigital number, since it uses as much as digits as its factorization.

66185472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86198 (or 86184 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 66185472 is about 8135.4454088267. The cubic root of 66185472 is about 404.5022019873.

It can be divided in two parts, 6618 and 5472, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 66185472 in words is "sixty-six million, one hundred eighty-five thousand, four hundred seventy-two".