72818166 has 8 divisors (see below), whose sum is σ = 145636344. Its totient is φ = 24272720.

The previous prime is 72818147. The next prime is 72818167. The reversal of 72818166 is 66181827.

It is a sphenic number, since it is the product of 3 distinct primes.

72818166 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72818167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6068175 + ... + 6068186.

It is an arithmetic number, because the mean of its divisors is an integer number (18204543).

Almost surely, 2^72818166 is an apocalyptic number.

72818166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72818166 is a wasteful number, since it uses less digits than its factorization.

72818166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12136366.

The product of its digits is 32256, while the sum is 39.

The square root of 72818166 is about 8533.3560806988. The cubic root of 72818166 is about 417.5866238321.

The spelling of 72818166 in words is "seventy-two million, eight hundred eighteen thousand, one hundred sixty-six".