169998966 has 64 divisors (see below), whose sum is σ = 403756800. Its totient is φ = 52861248.

The previous prime is 169998943. The next prime is 169999007. The reversal of 169998966 is 669899961.

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, 67506 + ... + 69978.

It is an arithmetic number, because the mean of its divisors is an integer number (6308700).

Almost surely, 2^169998966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169998966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201878400).

169998966 is an abundant number, since it is smaller than the sum of its proper divisors (233757834).

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

169998966 is a wasteful number, since it uses less digits than its factorization.

169998966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570 (or 2564 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 63.

The square root of 169998966 is about 13038.3651582551. The cubic root of 169998966 is about 553.9647025346.

The spelling of 169998966 in words is "one hundred sixty-nine million, nine hundred ninety-eight thousand, nine hundred sixty-six".