7215364565 has 16 divisors (see below), whose sum is σ = 8987639040. Its totient is φ = 5556851520.

The previous prime is 7215364547. The next prime is 7215364567. The reversal of 7215364565 is 5654635127.

It is a happy number.

It is not a de Polignac number, because 7215364565 - 2¹² = 7215360469 is a prime.

It is a super-2 number, since 2×7215364565² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215364567) 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, 237335 + ... + 266004.

It is an arithmetic number, because the mean of its divisors is an integer number (561727440).

Almost surely, 2^7215364565 is an apocalyptic number.

It is an amenable number.

7215364565 is a deficient number, since it is larger than the sum of its proper divisors (1772274475).

7215364565 is a wasteful number, since it uses less digits than its factorization.

7215364565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503452.

The product of its digits is 756000, while the sum is 44.

The square root of 7215364565 is about 84943.3020608453. The cubic root of 7215364565 is about 1932.3513418882.

The spelling of 7215364565 in words is "seven billion, two hundred fifteen million, three hundred sixty-four thousand, five hundred sixty-five".