66137166 has 12 divisors (see below), whose sum is σ = 143297232. Its totient is φ = 22045716.

The previous prime is 66137153. The next prime is 66137179. The reversal of 66137166 is 66173166.

It is an interprime number because it is at equal distance from previous prime (66137153) and next prime (66137179).

It is a self number, because there is not a number n which added to its sum of digits gives 66137166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1837126 + ... + 1837161.

It is an arithmetic number, because the mean of its divisors is an integer number (11941436).

Almost surely, 2^66137166 is an apocalyptic number.

66137166 is an abundant number, since it is smaller than the sum of its proper divisors (77160066).

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

66137166 is a wasteful number, since it uses less digits than its factorization.

66137166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674295 (or 3674292 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 66137166 is about 8132.4760067276. The cubic root of 66137166 is about 404.4037683054.

The spelling of 66137166 in words is "sixty-six million, one hundred thirty-seven thousand, one hundred sixty-six".