166881080 has 64 divisors (see below), whose sum is σ = 390549600. Its totient is φ = 64099840.

The previous prime is 166881073. The next prime is 166881083. The reversal of 166881080 is 80188661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166881083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339635 + ... + 340125.

Almost surely, 2^166881080 is an apocalyptic number.

166881080 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 166881080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195274800).

166881080 is an abundant number, since it is smaller than the sum of its proper divisors (223668520).

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

166881080 is a wasteful number, since it uses less digits than its factorization.

166881080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 166881080 is about 12918.2460109722. The cubic root of 166881080 is about 550.5570994308.

The spelling of 166881080 in words is "one hundred sixty-six million, eight hundred eighty-one thousand, eighty".