166992880 has 80 divisors (see below), whose sum is σ = 413973504. Its totient is φ = 62501120.

The previous prime is 166992871. The next prime is 166992883. The reversal of 166992880 is 88299661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166992883) 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, 85515 + ... + 87445.

Almost surely, 2^166992880 is an apocalyptic number.

166992880 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 166992880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206986752).

166992880 is an abundant number, since it is smaller than the sum of its proper divisors (246980624).

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

166992880 is a wasteful number, since it uses less digits than its factorization.

166992880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014 (or 2008 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 166992880 is about 12922.5724993130. The cubic root of 166992880 is about 550.6800183849.

It can be divided in two parts, 1669 and 92880, that added together give a palindrome (94549).

The spelling of 166992880 in words is "one hundred sixty-six million, nine hundred ninety-two thousand, eight hundred eighty".