166322660 has 144 divisors (see below), whose sum is σ = 435746304. Its totient is φ = 53044992.

The previous prime is 166322647. The next prime is 166322669. The reversal of 166322660 is 66223661.

It is not an unprimeable number, because it can be changed into a prime (166322669) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1059302 + ... + 1059458.

It is an arithmetic number, because the mean of its divisors is an integer number (3026016).

Almost surely, 2^166322660 is an apocalyptic number.

166322660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166322660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217873152).

166322660 is an abundant number, since it is smaller than the sum of its proper divisors (269423644).

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

166322660 is a wasteful number, since it uses less digits than its factorization.

166322660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 166322660 is about 12896.6142843771. The cubic root of 166322660 is about 549.9423190198.

The spelling of 166322660 in words is "one hundred sixty-six million, three hundred twenty-two thousand, six hundred sixty".