66472165 has 16 divisors (see below), whose sum is σ = 86238720. Its totient is φ = 49014720.

The previous prime is 66472157. The next prime is 66472177. The reversal of 66472165 is 56127466.

It is a happy number.

It is not a de Polignac number, because 66472165 - 2³ = 66472157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5941 + ... + 12970.

It is an arithmetic number, because the mean of its divisors is an integer number (5389920).

Almost surely, 2^66472165 is an apocalyptic number.

It is an amenable number.

66472165 is a deficient number, since it is larger than the sum of its proper divisors (19766555).

66472165 is a wasteful number, since it uses less digits than its factorization.

66472165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18972.

The product of its digits is 60480, while the sum is 37.

The square root of 66472165 is about 8153.0463631700. The cubic root of 66472165 is about 405.0854161151.

The spelling of 66472165 in words is "sixty-six million, four hundred seventy-two thousand, one hundred sixty-five".