7665222744 has 144 divisors (see below), whose sum is σ = 22193402400. Its totient is φ = 2389315968.

The previous prime is 7665222739. The next prime is 7665222779. The reversal of 7665222744 is 4472225667.

It is a happy number.

7665222744 is a `hidden beast` number, since 7 + 66 + 522 + 27 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 7665222744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2051502 + ... + 2055234.

It is an arithmetic number, because the mean of its divisors is an integer number (154120850).

Almost surely, 2^7665222744 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 7665222744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11096701200).

7665222744 is an abundant number, since it is smaller than the sum of its proper divisors (14528179656).

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

7665222744 is a wasteful number, since it uses less digits than its factorization.

7665222744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862 (or 3836 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 45.

The square root of 7665222744 is about 87551.2578093542. The cubic root of 7665222744 is about 1971.7034356336.

The spelling of 7665222744 in words is "seven billion, six hundred sixty-five million, two hundred twenty-two thousand, seven hundred forty-four".