7665722656 has 96 divisors (see below), whose sum is σ = 16324761600. Its totient is φ = 3534935040.

The previous prime is 7665722651. The next prime is 7665722683. The reversal of 7665722656 is 6562275667.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (7665722651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2270986 + ... + 2274358.

It is an arithmetic number, because the mean of its divisors is an integer number (170049600).

Almost surely, 2^7665722656 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 7665722656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8162380800).

7665722656 is an abundant number, since it is smaller than the sum of its proper divisors (8659038944).

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

7665722656 is a wasteful number, since it uses less digits than its factorization.

7665722656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522 (or 3514 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 52.

The square root of 7665722656 is about 87554.1127303566. The cubic root of 7665722656 is about 1971.7462983489.

The spelling of 7665722656 in words is "seven billion, six hundred sixty-five million, seven hundred twenty-two thousand, six hundred fifty-six".