7665665667 has 32 divisors (see below), whose sum is σ = 11235840000. Its totient is φ = 4610247840.

The previous prime is 7665665627. The next prime is 7665665713.

7665665667 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7665665667 - 2¹² = 7665661571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7665665667.

It is not an unprimeable number, because it can be changed into a prime (7665665627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2881584 + ... + 2884242.

It is an arithmetic number, because the mean of its divisors is an integer number (351120000).

Almost surely, 2^7665665667 is an apocalyptic number.

7665665667 is a deficient number, since it is larger than the sum of its proper divisors (3570174333).

7665665667 is a wasteful number, since it uses less digits than its factorization.

7665665667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311.

The product of its digits is 57153600, while the sum is 60.

The square root of 7665665667 is about 87553.7872795917. The cubic root of 7665665667 is about 1971.7414121765.

The spelling of 7665665667 in words is "seven billion, six hundred sixty-five million, six hundred sixty-five thousand, six hundred sixty-seven".