166865960 has 32 divisors (see below), whose sum is σ = 376358400. Its totient is φ = 66584640.

The previous prime is 166865957. The next prime is 166865969. The reversal of 166865960 is 69568661.

It is not an unprimeable number, because it can be changed into a prime (166865969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12401 + ... + 22079.

It is an arithmetic number, because the mean of its divisors is an integer number (11761200).

Almost surely, 2^166865960 is an apocalyptic number.

166865960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166865960 is an abundant number, since it is smaller than the sum of its proper divisors (209492440).

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

166865960 is a wasteful number, since it uses less digits than its factorization.

166865960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10121 (or 10117 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 166865960 is about 12917.6607789491. The cubic root of 166865960 is about 550.5404714728.

The spelling of 166865960 in words is "one hundred sixty-six million, eight hundred sixty-five thousand, nine hundred sixty".