166666080 has 96 divisors (see below), whose sum is σ = 600009984. Its totient is φ = 38094336.

The previous prime is 166666069. The next prime is 166666111. The reversal of 166666080 is 80666661.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21442 + ... + 28161.

It is an arithmetic number, because the mean of its divisors is an integer number (6250104).

Almost surely, 2^166666080 is an apocalyptic number.

166666080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166666080 is an abundant number, since it is smaller than the sum of its proper divisors (433343904).

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

166666080 is a wasteful number, since it uses less digits than its factorization.

166666080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49628 (or 49620 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 166666080 is about 12909.9217658358. The cubic root of 166666080 is about 550.3205624381.

The spelling of 166666080 in words is "one hundred sixty-six million, six hundred sixty-six thousand, eighty".