7722766165 has 8 divisors (see below), whose sum is σ = 9273296088. Its totient is φ = 6174228480.

The previous prime is 7722766151. The next prime is 7722766169. The reversal of 7722766165 is 5616672277.

It can be written as a sum of positive squares in 4 ways, for example, as 796199089 + 6926567076 = 28217^2 + 83226^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7722766165 - 2²⁷ = 7588548437 is a prime.

It is a super-2 number, since 2×7722766165² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7722766169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489516 + ... + 505045.

It is an arithmetic number, because the mean of its divisors is an integer number (1159162011).

Almost surely, 2^7722766165 is an apocalyptic number.

It is an amenable number.

7722766165 is a deficient number, since it is larger than the sum of its proper divisors (1550529923).

7722766165 is a wasteful number, since it uses less digits than its factorization.

7722766165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996119.

The product of its digits is 1481760, while the sum is 49.

The square root of 7722766165 is about 87879.2703941038. The cubic root of 7722766165 is about 1976.6250506035.

The spelling of 7722766165 in words is "seven billion, seven hundred twenty-two million, seven hundred sixty-six thousand, one hundred sixty-five".