66166136 has 8 divisors (see below), whose sum is σ = 124061520. Its totient is φ = 33083064.

The previous prime is 66166123. The next prime is 66166141. The reversal of 66166136 is 63166166.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 66166096 and 66166105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4135376 + ... + 4135391.

It is an arithmetic number, because the mean of its divisors is an integer number (15507690).

Almost surely, 2^66166136 is an apocalyptic number.

It is an amenable number.

66166136 is a deficient number, since it is larger than the sum of its proper divisors (57895384).

66166136 is a wasteful number, since it uses less digits than its factorization.

66166136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8270773 (or 8270769 counting only the distinct ones).

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

The square root of 66166136 is about 8134.2569420937. The cubic root of 66166136 is about 404.4628065523.

The spelling of 66166136 in words is "sixty-six million, one hundred sixty-six thousand, one hundred thirty-six".