72655318 has 8 divisors (see below), whose sum is σ = 109500120. Its totient is φ = 36155280.

The previous prime is 72655313. The next prime is 72655333. The reversal of 72655318 is 81355627.

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

It is a super-2 number, since 2×72655318² = 10557590467362248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72655313) 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, 85663 + ... + 86506.

It is an arithmetic number, because the mean of its divisors is an integer number (13687515).

Almost surely, 2^72655318 is an apocalyptic number.

72655318 is a deficient number, since it is larger than the sum of its proper divisors (36844802).

72655318 is a wasteful number, since it uses less digits than its factorization.

72655318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172382.

The product of its digits is 50400, while the sum is 37.

The square root of 72655318 is about 8523.8088903964. The cubic root of 72655318 is about 417.2750994482.

The spelling of 72655318 in words is "seventy-two million, six hundred fifty-five thousand, three hundred eighteen".