73668165 has 16 divisors (see below), whose sum is σ = 118368000. Its totient is φ = 39123392.

The previous prime is 73668163. The next prime is 73668181. The reversal of 73668165 is 56186637.

It is a cyclic number.

It is not a de Polignac number, because 73668165 - 2¹ = 73668163 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73668163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6690 + ... + 13859.

It is an arithmetic number, because the mean of its divisors is an integer number (7398000).

Almost surely, 2^73668165 is an apocalyptic number.

It is an amenable number.

73668165 is a deficient number, since it is larger than the sum of its proper divisors (44699835).

73668165 is a wasteful number, since it uses less digits than its factorization.

73668165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20796.

The product of its digits is 181440, while the sum is 42.

The square root of 73668165 is about 8583.0160782792. The cubic root of 73668165 is about 419.2051577222.

The spelling of 73668165 in words is "seventy-three million, six hundred sixty-eight thousand, one hundred sixty-five".