7640830165 has 8 divisors (see below), whose sum is σ = 9263522520. Its totient is φ = 6049646592.

The previous prime is 7640830157. The next prime is 7640830177. The reversal of 7640830165 is 5610380467.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 57729604 + 7583100561 = 7598^2 + 87081^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7640830165 - 2³ = 7640830157 is a prime.

It is a super-2 number, since 2×7640830165² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7876660 + ... + 7877629.

It is an arithmetic number, because the mean of its divisors is an integer number (1157940315).

Almost surely, 2^7640830165 is an apocalyptic number.

It is an amenable number.

7640830165 is a deficient number, since it is larger than the sum of its proper divisors (1622692355).

7640830165 is a wasteful number, since it uses less digits than its factorization.

7640830165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15754391.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 7640830165 is about 87411.8422469176. The cubic root of 7640830165 is about 1969.6097352786.

The spelling of 7640830165 in words is "seven billion, six hundred forty million, eight hundred thirty thousand, one hundred sixty-five".