169890966 has 64 divisors (see below), whose sum is σ = 432806400. Its totient is φ = 48390048.

The previous prime is 169890883. The next prime is 169890971. The reversal of 169890966 is 669098961.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191961 + ... + 192843.

It is an arithmetic number, because the mean of its divisors is an integer number (6762600).

Almost surely, 2^169890966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169890966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216403200).

169890966 is an abundant number, since it is smaller than the sum of its proper divisors (262915434).

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

169890966 is a wasteful number, since it uses less digits than its factorization.

169890966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 169890966 is about 13034.2228767196. Note that the first 3 decimals coincide. The cubic root of 169890966 is about 553.8473667976.

The spelling of 169890966 in words is "one hundred sixty-nine million, eight hundred ninety thousand, nine hundred sixty-six".