166966339 has 4 divisors (see below), whose sum is σ = 167601456. Its totient is φ = 166331224.

The previous prime is 166966297. The next prime is 166966351. The reversal of 166966339 is 933669661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933669661 = 3499 ⋅266839.

It is a cyclic number.

It is not a de Polignac number, because 166966339 - 2¹⁷ = 166835267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166966292 and 166966301.

It is not an unprimeable number, because it can be changed into a prime (166966379) 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, 317164 + ... + 317689.

It is an arithmetic number, because the mean of its divisors is an integer number (41900364).

Almost surely, 2^166966339 is an apocalyptic number.

166966339 is a deficient number, since it is larger than the sum of its proper divisors (635117).

166966339 is an equidigital number, since it uses as much as digits as its factorization.

166966339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635116.

The product of its digits is 944784, while the sum is 49.

The square root of 166966339 is about 12921.5455344939. The cubic root of 166966339 is about 550.6508427443.

The spelling of 166966339 in words is "one hundred sixty-six million, nine hundred sixty-six thousand, three hundred thirty-nine".