166068439 has 4 divisors (see below), whose sum is σ = 166911624. Its totient is φ = 165225256.

The previous prime is 166068431. The next prime is 166068449. The reversal of 166068439 is 934860661.

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

It is a cyclic number.

It is not a de Polignac number, because 166068439 - 2³ = 166068431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166068395 and 166068404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166068431) 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 3 ways as a sum of consecutive naturals, for example, 421297 + ... + 421690.

It is an arithmetic number, because the mean of its divisors is an integer number (41727906).

Almost surely, 2^166068439 is an apocalyptic number.

166068439 is a deficient number, since it is larger than the sum of its proper divisors (843185).

166068439 is an equidigital number, since it uses as much as digits as its factorization.

166068439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843184.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 166068439 is about 12886.7544013223. The cubic root of 166068439 is about 549.6619840421.

The spelling of 166068439 in words is "one hundred sixty-six million, sixty-eight thousand, four hundred thirty-nine".