166936780 has 12 divisors (see below), whose sum is σ = 350567280. Its totient is φ = 66774704.

The previous prime is 166936771. The next prime is 166936807. The reversal of 166936780 is 87639661.

166936780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 166936780.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4173400 + ... + 4173439.

It is an arithmetic number, because the mean of its divisors is an integer number (29213940).

Almost surely, 2^166936780 is an apocalyptic number.

166936780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166936780 is an abundant number, since it is smaller than the sum of its proper divisors (183630500).

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

166936780 is a wasteful number, since it uses less digits than its factorization.

166936780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8346848 (or 8346846 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 166936780 is about 12920.4016965418. The cubic root of 166936780 is about 550.6183458770.

The spelling of 166936780 in words is "one hundred sixty-six million, nine hundred thirty-six thousand, seven hundred eighty".