72618255 has 16 divisors (see below), whose sum is σ = 129099360. Its totient is φ = 38729664.

The previous prime is 72618241. The next prime is 72618263. The reversal of 72618255 is 55281627.

It is a happy number.

It is not a de Polignac number, because 72618255 - 2⁵ = 72618223 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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, 268822 + ... + 269091.

It is an arithmetic number, because the mean of its divisors is an integer number (8068710).

Almost surely, 2^72618255 is an apocalyptic number.

72618255 is a deficient number, since it is larger than the sum of its proper divisors (56481105).

72618255 is a wasteful number, since it uses less digits than its factorization.

72618255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537927 (or 537921 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 72618255 is about 8521.6345263101. The cubic root of 72618255 is about 417.2041337895.

It can be divided in two parts, 726 and 18255, that added together give a palindrome (18981).

The spelling of 72618255 in words is "seventy-two million, six hundred eighteen thousand, two hundred fifty-five".