966626669 has 4 divisors (see below), whose sum is σ = 968548896. Its totient is φ = 964704444.

The previous prime is 966626629. The next prime is 966626719.

966626669 is nontrivially palindromic in base 10.

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 a de Polignac number, because none of the positive numbers 2^k-966626669 is a prime.

It is a super-2 number, since 2×966626669² = 1868734234444071122, which 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 (966626629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960359 + ... + 961364.

It is an arithmetic number, because the mean of its divisors is an integer number (242137224).

Almost surely, 2^966626669 is an apocalyptic number.

It is an amenable number.

966626669 is a deficient number, since it is larger than the sum of its proper divisors (1922227).

966626669 is a wasteful number, since it uses less digits than its factorization.

966626669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922226.

The product of its digits is 7558272, while the sum is 56.

The square root of 966626669 is about 31090.6202736452. The cubic root of 966626669 is about 988.7494562775.

The spelling of 966626669 in words is "nine hundred sixty-six million, six hundred twenty-six thousand, six hundred sixty-nine".