166685344 has 48 divisors (see below), whose sum is σ = 375919488. Its totient is φ = 71269632.

The previous prime is 166685293. The next prime is 166685369. The reversal of 166685344 is 443586661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 166685344.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169077 + ... + 170059.

It is an arithmetic number, because the mean of its divisors is an integer number (7831656).

Almost surely, 2^166685344 is an apocalyptic number.

166685344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

166685344 is an abundant number, since it is smaller than the sum of its proper divisors (209234144).

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

166685344 is an equidigital number, since it uses as much as digits as its factorization.

166685344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757 (or 1749 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 166685344 is about 12910.6678371028. The cubic root of 166685344 is about 550.3417644465.

The spelling of 166685344 in words is "one hundred sixty-six million, six hundred eighty-five thousand, three hundred forty-four".