72986615 has 16 divisors (see below), whose sum is σ = 94499328. Its totient is φ = 53796096.

The previous prime is 72986597. The next prime is 72986647. The reversal of 72986615 is 51668927.

It is a cyclic number.

It is not a de Polignac number, because 72986615 - 2¹⁴ = 72970231 is a prime.

It is a Duffinian number.

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, 66602 + ... + 67688.

It is an arithmetic number, because the mean of its divisors is an integer number (5906208).

Almost surely, 2^72986615 is an apocalyptic number.

72986615 is a deficient number, since it is larger than the sum of its proper divisors (21512713).

72986615 is a wasteful number, since it uses less digits than its factorization.

72986615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138.

The product of its digits is 181440, while the sum is 44.

The square root of 72986615 is about 8543.2204115310. The cubic root of 72986615 is about 417.9083744899.

The spelling of 72986615 in words is "seventy-two million, nine hundred eighty-six thousand, six hundred fifteen".