7222613644 has 6 divisors (see below), whose sum is σ = 12639573884. Its totient is φ = 3611306820.

The previous prime is 7222613641. The next prime is 7222613731. The reversal of 7222613644 is 4463162227.

It is a super-2 number, since 2×7222613644² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7222613641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902826702 + ... + 902826709.

Almost surely, 2^7222613644 is an apocalyptic number.

It is an amenable number.

7222613644 is a deficient number, since it is larger than the sum of its proper divisors (5416960240).

7222613644 is a wasteful number, since it uses less digits than its factorization.

7222613644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805653415 (or 1805653413 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 7222613644 is about 84985.9614524658. The cubic root of 7222613644 is about 1932.9982521009.

The spelling of 7222613644 in words is "seven billion, two hundred twenty-two million, six hundred thirteen thousand, six hundred forty-four".