7228765 has 4 divisors (see below), whose sum is σ = 8674524. Its totient is φ = 5783008.

The previous prime is 7228747. The next prime is 7228769. The reversal of 7228765 is 5678227.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3059001 + 4169764 = 1749^2 + 2042^2 .

It is a cyclic number.

It is not a de Polignac number, because 7228765 - 2⁵ = 7228733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7228769) 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, 722872 + ... + 722881.

It is an arithmetic number, because the mean of its divisors is an integer number (2168631).

Almost surely, 2^7228765 is an apocalyptic number.

It is an amenable number.

7228765 is a deficient number, since it is larger than the sum of its proper divisors (1445759).

7228765 is a wasteful number, since it uses less digits than its factorization.

7228765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445758.

The product of its digits is 47040, while the sum is 37.

The square root of 7228765 is about 2688.6362714209. The cubic root of 7228765 is about 193.3546861738.

The spelling of 7228765 in words is "seven million, two hundred twenty-eight thousand, seven hundred sixty-five".