72659718 has 24 divisors (see below), whose sum is σ = 157896648. Its totient is φ = 24148032.

The previous prime is 72659711. The next prime is 72659773. The reversal of 72659718 is 81795627.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72659711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430 + ... + 12062.

It is an arithmetic number, because the mean of its divisors is an integer number (6579027).

Almost surely, 2^72659718 is an apocalyptic number.

72659718 is an abundant number, since it is smaller than the sum of its proper divisors (85236930).

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

72659718 is a wasteful number, since it uses less digits than its factorization.

72659718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11988 (or 11985 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 72659718 is about 8524.0669870667. The cubic root of 72659718 is about 417.2835226600.

It can be divided in two parts, 726597 and 18, that added together give a triangular number (726615 = T₁₂₀₅).

The spelling of 72659718 in words is "seventy-two million, six hundred fifty-nine thousand, seven hundred eighteen".