72707166 has 32 divisors (see below), whose sum is σ = 184654080. Its totient is φ = 20773368.

The previous prime is 72707111. The next prime is 72707189. The reversal of 72707166 is 66170727.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72707166.

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, 95796 + ... + 96551.

It is an arithmetic number, because the mean of its divisors is an integer number (5770440).

Almost surely, 2^72707166 is an apocalyptic number.

72707166 is an abundant number, since it is smaller than the sum of its proper divisors (111946914).

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

72707166 is a wasteful number, since it uses less digits than its factorization.

72707166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192365 (or 192359 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 72707166 is about 8526.8497113530. The cubic root of 72707166 is about 417.3743339143.

The spelling of 72707166 in words is "seventy-two million, seven hundred seven thousand, one hundred sixty-six".