7215764 has 12 divisors (see below), whose sum is σ = 12770100. Its totient is φ = 3567168.

The previous prime is 7215749. The next prime is 7215779. The reversal of 7215764 is 4675127.

7215764 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7215749) and next prime (7215779).

It can be written as a sum of positive squares in 2 ways, for example, as 3452164 + 3763600 = 1858^2 + 1940^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7215764.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9779 + ... + 10490.

It is an arithmetic number, because the mean of its divisors is an integer number (1064175).

Almost surely, 2^7215764 is an apocalyptic number.

It is an amenable number.

7215764 is a deficient number, since it is larger than the sum of its proper divisors (5554336).

7215764 is a wasteful number, since it uses less digits than its factorization.

7215764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20362 (or 20360 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 7215764 is about 2686.2174148791. The cubic root of 7215764 is about 193.2386998877.

The spelling of 7215764 in words is "seven million, two hundred fifteen thousand, seven hundred sixty-four".