66166156 has 12 divisors (see below), whose sum is σ = 132332368. Its totient is φ = 28356912.

The previous prime is 66166153. The next prime is 66166157. The reversal of 66166156 is 65166166.

66166156 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 not an unprimeable number, because it can be changed into a prime (66166153) 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, 1181511 + ... + 1181566.

Almost surely, 2^66166156 is an apocalyptic number.

It is an amenable number.

66166156 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.

66166156 is a wasteful number, since it uses less digits than its factorization.

66166156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363088 (or 2363086 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 66166156 is about 8134.2581714622. The cubic root of 66166156 is about 404.4628473045.

The spelling of 66166156 in words is "sixty-six million, one hundred sixty-six thousand, one hundred fifty-six".