72215365 has 16 divisors (see below), whose sum is σ = 90316800. Its totient is φ = 55363392.

The previous prime is 72215327. The next prime is 72215369. The reversal of 72215365 is 56351227.

It is a cyclic number.

It is not a de Polignac number, because 72215365 - 2⁷ = 72215237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72215369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18364 + ... + 21946.

It is an arithmetic number, because the mean of its divisors is an integer number (5644800).

Almost surely, 2^72215365 is an apocalyptic number.

It is an amenable number.

72215365 is a deficient number, since it is larger than the sum of its proper divisors (18101435).

72215365 is a wasteful number, since it uses less digits than its factorization.

72215365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756.

The product of its digits is 12600, while the sum is 31.

The square root of 72215365 is about 8497.9624028352. The cubic root of 72215365 is about 416.4311454743.

The spelling of 72215365 in words is "seventy-two million, two hundred fifteen thousand, three hundred sixty-five".