166845660 has 24 divisors (see below), whose sum is σ = 467168016. Its totient is φ = 44492160.

The previous prime is 166845649. The next prime is 166845697. The reversal of 166845660 is 66548661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390321 + ... + 1390440.

It is an arithmetic number, because the mean of its divisors is an integer number (19465334).

Almost surely, 2^166845660 is an apocalyptic number.

166845660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166845660 is an abundant number, since it is smaller than the sum of its proper divisors (300322356).

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

166845660 is a wasteful number, since it uses less digits than its factorization.

166845660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780773 (or 2780771 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 166845660 is about 12916.8750090724. The cubic root of 166845660 is about 550.5181453199.

The spelling of 166845660 in words is "one hundred sixty-six million, eight hundred forty-five thousand, six hundred sixty".