166664339 has 4 divisors (see below), whose sum is σ = 172040640. Its totient is φ = 161288040.

The previous prime is 166664299. The next prime is 166664341. The reversal of 166664339 is 933466661.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-166664339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166664339.

It is not an unprimeable number, because it can be changed into a prime (166664359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2688104 + ... + 2688165.

It is an arithmetic number, because the mean of its divisors is an integer number (43010160).

Almost surely, 2^166664339 is an apocalyptic number.

166664339 is a deficient number, since it is larger than the sum of its proper divisors (5376301).

166664339 is an equidigital number, since it uses as much as digits as its factorization.

166664339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376300.

The product of its digits is 419904, while the sum is 44.

The square root of 166664339 is about 12909.8543369009. The cubic root of 166664339 is about 550.3186462085.

The spelling of 166664339 in words is "one hundred sixty-six million, six hundred sixty-four thousand, three hundred thirty-nine".