969606666 has 128 divisors (see below), whose sum is σ = 2520460800. Its totient is φ = 270604800.

The previous prime is 969606629. The next prime is 969606667. The reversal of 969606666 is 666606969.

969606666 is a nontrivial binomial coefficient, being equal to C(44037, 2).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (969606667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4161286 + ... + 4161518.

It is an arithmetic number, because the mean of its divisors is an integer number (19691100).

Almost surely, 2^969606666 is an apocalyptic number.

969606666 is the 44036-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 969606666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1260230400).

969606666 is an abundant number, since it is smaller than the sum of its proper divisors (1550854134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

969606666 is a wasteful number, since it uses less digits than its factorization.

969606666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 54.

The square root of 969606666 is about 31138.5077677142. The cubic root of 969606666 is about 989.7644802464.

The spelling of 969606666 in words is "nine hundred sixty-nine million, six hundred six thousand, six hundred sixty-six".