7222116660 has 96 divisors (see below), whose sum is σ = 22221585792. Its totient is φ = 1738014720.

The previous prime is 7222116653. The next prime is 7222116689. The reversal of 7222116660 is 666112227.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50484 + ... + 130356.

It is an arithmetic number, because the mean of its divisors is an integer number (231474852).

Almost surely, 2^7222116660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7222116660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11110792896).

7222116660 is an abundant number, since it is smaller than the sum of its proper divisors (14999469132).

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

7222116660 is a wasteful number, since it uses less digits than its factorization.

7222116660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80033 (or 80031 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 7222116660 is about 84983.0374839591. The cubic root of 7222116660 is about 1932.9539149082.

Adding to 7222116660 its reverse (666112227), we get a palindrome (7888228887).

The spelling of 7222116660 in words is "seven billion, two hundred twenty-two million, one hundred sixteen thousand, six hundred sixty".