966663889 has 8 divisors (see below), whose sum is σ = 984167168. Its totient is φ = 949214160.

The previous prime is 966663881. The next prime is 966663913. The reversal of 966663889 is 988366669.

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 966663889 - 2³ = 966663881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is not an unprimeable number, because it can be changed into a prime (966663881) 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 7 ways as a sum of consecutive naturals, for example, 23974 + ... + 50080.

It is an arithmetic number, because the mean of its divisors is an integer number (123020896).

Almost surely, 2^966663889 is an apocalyptic number.

It is an amenable number.

966663889 is a deficient number, since it is larger than the sum of its proper divisors (17503279).

966663889 is a wasteful number, since it uses less digits than its factorization.

966663889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26775.

The product of its digits is 20155392, while the sum is 61.

The square root of 966663889 is about 31091.2188406952. The cubic root of 966663889 is about 988.7621467275.

The spelling of 966663889 in words is "nine hundred sixty-six million, six hundred sixty-three thousand, eight hundred eighty-nine".