166644480 has 72 divisors (see below), whose sum is σ = 532233072. Its totient is φ = 44437504.

The previous prime is 166644463. The next prime is 166644481. The reversal of 166644480 is 84446661.

166644480 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166644481) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17859 + ... + 25538.

It is an arithmetic number, because the mean of its divisors is an integer number (7392126).

Almost surely, 2^166644480 is an apocalyptic number.

166644480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166644480 is an abundant number, since it is smaller than the sum of its proper divisors (365588592).

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

166644480 is an equidigital number, since it uses as much as digits as its factorization.

166644480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43421 (or 43407 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 166644480 is about 12909.0851728540. The cubic root of 166644480 is about 550.2967874790.

The spelling of 166644480 in words is "one hundred sixty-six million, six hundred forty-four thousand, four hundred eighty".