66361166 has 16 divisors (see below), whose sum is σ = 105552720. Its totient is φ = 31182720.

The previous prime is 66361157. The next prime is 66361177. The reversal of 66361166 is 66116366.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36200 + ... + 37988.

It is an arithmetic number, because the mean of its divisors is an integer number (6597045).

Almost surely, 2^66361166 is an apocalyptic number.

66361166 is a deficient number, since it is larger than the sum of its proper divisors (39191554).

66361166 is a wasteful number, since it uses less digits than its factorization.

66361166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899.

The product of its digits is 23328, while the sum is 35.

The square root of 66361166 is about 8146.2363088730. The cubic root of 66361166 is about 404.8598122742.

The spelling of 66361166 in words is "sixty-six million, three hundred sixty-one thousand, one hundred sixty-six".