7226664642 has 30 divisors (see below), whose sum is σ = 16195506723. Its totient is φ = 2408527548.

The previous prime is 7226664637. The next prime is 7226664673. The reversal of 7226664642 is 2464666227.

It can be written as a sum of positive squares in only one way, i.e., 3613332321 + 3613332321 = 60111^2 + 60111^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=60111.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1078659 + ... + 1085337.

Almost surely, 2^7226664642 is an apocalyptic number.

7226664642 is an abundant number, since it is smaller than the sum of its proper divisors (8968842081).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7226664642 is an frugal number, since it uses more digits than its factorization.

7226664642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13372 (or 6684 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 45.

The square root of 7226664642 is about 85009.7914478091. The cubic root of 7226664642 is about 1933.3595759881.

The spelling of 7226664642 in words is "seven billion, two hundred twenty-six million, six hundred sixty-four thousand, six hundred forty-two".