969689664 has 112 divisors (see below), whose sum is σ = 2885480640. Its totient is φ = 319288320.

The previous prime is 969689663. The next prime is 969689701. The reversal of 969689664 is 466986969.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (969689663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140044 + ... + 146804.

It is an arithmetic number, because the mean of its divisors is an integer number (25763220).

Almost surely, 2^969689664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 969689664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1442740320).

969689664 is an abundant number, since it is smaller than the sum of its proper divisors (1915790976).

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

969689664 is a wasteful number, since it uses less digits than its factorization.

969689664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865 (or 6849 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 63.

The square root of 969689664 is about 31139.8404620191. The cubic root of 969689664 is about 989.7927206080.

The spelling of 969689664 in words is "nine hundred sixty-nine million, six hundred eighty-nine thousand, six hundred sixty-four".