7666968869 has 4 divisors (see below), whose sum is σ = 8762250144. Its totient is φ = 6571687596.

The previous prime is 7666968851. The next prime is 7666968889. The reversal of 7666968869 is 9688696667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7666968869 - 2²⁰ = 7665920293 is a prime.

It is a super-2 number, since 2×7666968869² (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 (7666968889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547640627 + ... + 547640640.

It is an arithmetic number, because the mean of its divisors is an integer number (2190562536).

Almost surely, 2^7666968869 is an apocalyptic number.

It is an amenable number.

7666968869 is a deficient number, since it is larger than the sum of its proper divisors (1095281275).

7666968869 is a wasteful number, since it uses less digits than its factorization.

7666968869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095281274.

The product of its digits is 282175488, while the sum is 71.

The square root of 7666968869 is about 87561.2292570176. The cubic root of 7666968869 is about 1971.8531411884.

The spelling of 7666968869 in words is "seven billion, six hundred sixty-six million, nine hundred sixty-eight thousand, eight hundred sixty-nine".