966666669 has 4 divisors (see below), whose sum is σ = 1288888896. Its totient is φ = 644444444.

The previous prime is 966666661. The next prime is 966666689.

966666669 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 not a de Polignac number, because 966666669 - 2³ = 966666661 is a prime.

It is a super-2 number, since 2×966666669² = 1868888897911111122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966666661) 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, 161111109 + ... + 161111114.

It is an arithmetic number, because the mean of its divisors is an integer number (322222224).

Almost surely, 2^966666669 is an apocalyptic number.

It is an amenable number.

966666669 is a deficient number, since it is larger than the sum of its proper divisors (322222227).

966666669 is a wasteful number, since it uses less digits than its factorization.

966666669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322222226.

The product of its digits is 22674816, while the sum is 60.

The square root of 966666669 is about 31091.2635478200. The cubic root of 966666669 is about 988.7630945772.

The spelling of 966666669 in words is "nine hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-nine".