66336165 has 40 divisors (see below), whose sum is σ = 135907200. Its totient is φ = 30323808.

The previous prime is 66336157. The next prime is 66336181. The reversal of 66336165 is 56163366.

It is a happy number.

66336165 is a `hidden beast` number, since 6 + 6 + 33 + 616 + 5 = 666.

It is not a de Polignac number, because 66336165 - 2³ = 66336157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8865 + ... + 14534.

It is an arithmetic number, because the mean of its divisors is an integer number (3397680).

Almost surely, 2^66336165 is an apocalyptic number.

It is an amenable number.

66336165 is an abundant number, since it is smaller than the sum of its proper divisors (69571035).

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

66336165 is a wasteful number, since it uses less digits than its factorization.

66336165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23423 (or 23414 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 66336165 is about 8144.7016519944. The cubic root of 66336165 is about 404.8089634010.

The spelling of 66336165 in words is "sixty-six million, three hundred thirty-six thousand, one hundred sixty-five".