7222615 has 4 divisors (see below), whose sum is σ = 8667144. Its totient is φ = 5778088.

The previous prime is 7222613. The next prime is 7222627. The reversal of 7222615 is 5162227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7222615 - 2¹ = 7222613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7222615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722257 + ... + 722266.

It is an arithmetic number, because the mean of its divisors is an integer number (2166786).

Almost surely, 2^7222615 is an apocalyptic number.

7222615 is a deficient number, since it is larger than the sum of its proper divisors (1444529).

7222615 is a wasteful number, since it uses less digits than its factorization.

7222615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444528.

The product of its digits is 1680, while the sum is 25.

The square root of 7222615 is about 2687.4923255704. The cubic root of 7222615 is about 193.2998373070.

The spelling of 7222615 in words is "seven million, two hundred twenty-two thousand, six hundred fifteen".