7222985668 has 12 divisors (see below), whose sum is σ = 12644776620. Its totient is φ = 3610192352.

The previous prime is 7222985617. The next prime is 7222985677. The reversal of 7222985668 is 8665892227.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2881757124 + 4341228544 = 53682^2 + 65888^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312571 + ... + 334882.

It is an arithmetic number, because the mean of its divisors is an integer number (1053731385).

Almost surely, 2^7222985668 is an apocalyptic number.

It is an amenable number.

7222985668 is a deficient number, since it is larger than the sum of its proper divisors (5421790952).

7222985668 is a wasteful number, since it uses less digits than its factorization.

7222985668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650246 (or 650244 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The square root of 7222985668 is about 84988.1501622432. The cubic root of 7222985668 is about 1933.0314399666.

The spelling of 7222985668 in words is "seven billion, two hundred twenty-two million, nine hundred eighty-five thousand, six hundred sixty-eight".