7228665 has 12 divisors (see below), whose sum is σ = 12529764. Its totient is φ = 3855264.

The previous prime is 7228657. The next prime is 7228681. The reversal of 7228665 is 5668227.

It can be written as a sum of positive squares in 2 ways, for example, as 1710864 + 5517801 = 1308^2 + 2349^2 .

It is not a de Polignac number, because 7228665 - 2³ = 7228657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80274 + ... + 80363.

It is an arithmetic number, because the mean of its divisors is an integer number (1044147).

Almost surely, 2^7228665 is an apocalyptic number.

It is an amenable number.

7228665 is a deficient number, since it is larger than the sum of its proper divisors (5301099).

7228665 is a wasteful number, since it uses less digits than its factorization.

7228665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160648 (or 160645 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 7228665 is about 2688.6176745681. The cubic root of 7228665 is about 193.3537945711.

The spelling of 7228665 in words is "seven million, two hundred twenty-eight thousand, six hundred sixty-five".