66974116 has 24 divisors (see below), whose sum is σ = 128118816. Its totient is φ = 30381120.

The previous prime is 66974099. The next prime is 66974119. The reversal of 66974116 is 61147966.

It is not an unprimeable number, because it can be changed into a prime (66974119) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25915 + ... + 28381.

It is an arithmetic number, because the mean of its divisors is an integer number (5338284).

Almost surely, 2^66974116 is an apocalyptic number.

It is an amenable number.

66974116 is a deficient number, since it is larger than the sum of its proper divisors (61144700).

66974116 is a wasteful number, since it uses less digits than its factorization.

66974116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099 (or 3097 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 66974116 is about 8183.7715021865. The cubic root of 66974116 is about 406.1025002674.

The spelling of 66974116 in words is "sixty-six million, nine hundred seventy-four thousand, one hundred sixteen".