66746156 has 12 divisors (see below), whose sum is σ = 116987640. Its totient is φ = 33321120.

The previous prime is 66746149. The next prime is 66746179. The reversal of 66746156 is 65164766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10025 + ... + 15296.

It is an arithmetic number, because the mean of its divisors is an integer number (9748970).

Almost surely, 2^66746156 is an apocalyptic number.

It is an amenable number.

66746156 is a deficient number, since it is larger than the sum of its proper divisors (50241484).

66746156 is a wasteful number, since it uses less digits than its factorization.

66746156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25984 (or 25982 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 66746156 is about 8169.8320668175. The cubic root of 66746156 is about 405.6412257567.

The spelling of 66746156 in words is "sixty-six million, seven hundred forty-six thousand, one hundred fifty-six".