7222942865 has 4 divisors (see below), whose sum is σ = 8667531444. Its totient is φ = 5778354288.

The previous prime is 7222942861. The next prime is 7222942889. The reversal of 7222942865 is 5682492227.

7222942865 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 898081024 + 6324861841 = 29968^2 + 79529^2 .

It is a cyclic number.

It is not a de Polignac number, because 7222942865 - 2² = 7222942861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7222942861) 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, 722294282 + ... + 722294291.

It is an arithmetic number, because the mean of its divisors is an integer number (2166882861).

Almost surely, 2^7222942865 is an apocalyptic number.

It is an amenable number.

7222942865 is a deficient number, since it is larger than the sum of its proper divisors (1444588579).

7222942865 is a wasteful number, since it uses less digits than its factorization.

7222942865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444588578.

The product of its digits is 967680, while the sum is 47.

The square root of 7222942865 is about 84987.8983444114. The cubic root of 7222942865 is about 1933.0276216144.

The spelling of 7222942865 in words is "seven billion, two hundred twenty-two million, nine hundred forty-two thousand, eight hundred sixty-five".