668169162 has 80 divisors (see below), whose sum is σ = 1618863840. Its totient is φ = 205263072.

The previous prime is 668169157. The next prime is 668169163. The reversal of 668169162 is 261961866.

It is not an unprimeable number, because it can be changed into a prime (668169163) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 110953 + ... + 116819.

It is an arithmetic number, because the mean of its divisors is an integer number (20235798).

Almost surely, 2^668169162 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668169162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809431920).

668169162 is an abundant number, since it is smaller than the sum of its proper divisors (950694678).

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

668169162 is a wasteful number, since it uses less digits than its factorization.

668169162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937 (or 5928 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 668169162 is about 25848.9682966265. The cubic root of 668169162 is about 874.2362476132.

The spelling of 668169162 in words is "six hundred sixty-eight million, one hundred sixty-nine thousand, one hundred sixty-two".