72700166 has 64 divisors (see below), whose sum is σ = 141419520. Its totient is φ = 27216000.

The previous prime is 72700163. The next prime is 72700183. The reversal of 72700166 is 66100727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72700163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 666920 + ... + 667028.

It is an arithmetic number, because the mean of its divisors is an integer number (2209680).

Almost surely, 2^72700166 is an apocalyptic number.

72700166 is a deficient number, since it is larger than the sum of its proper divisors (68719354).

72700166 is a wasteful number, since it uses less digits than its factorization.

72700166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 72700166 is about 8526.4392333494. The cubic root of 72700166 is about 417.3609390214.

The spelling of 72700166 in words is "seventy-two million, seven hundred thousand, one hundred sixty-six".