166664303 has 16 divisors (see below), whose sum is σ = 187802496. Its totient is φ = 146876160.

The previous prime is 166664299. The next prime is 166664341. The reversal of 166664303 is 303466661.

It is a cyclic number.

It is not a de Polignac number, because 166664303 - 2² = 166664299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166664803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21725 + ... + 28377.

It is an arithmetic number, because the mean of its divisors is an integer number (11737656).

Almost surely, 2^166664303 is an apocalyptic number.

166664303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

166664303 is a deficient number, since it is larger than the sum of its proper divisors (21138193).

166664303 is a wasteful number, since it uses less digits than its factorization.

166664303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6754.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 166664303 is about 12909.8529426171. The cubic root of 166664303 is about 550.3186065850.

The spelling of 166664303 in words is "one hundred sixty-six million, six hundred sixty-four thousand, three hundred three".