166663307 has 16 divisors (see below), whose sum is σ = 179660160. Its totient is φ = 154135872.

The previous prime is 166663283. The next prime is 166663327. The reversal of 166663307 is 703366661.

It is a cyclic number.

It is not a de Polignac number, because 166663307 - 2⁸ = 166663051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166663327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147848 + ... + 148970.

It is an arithmetic number, because the mean of its divisors is an integer number (11228760).

Almost surely, 2^166663307 is an apocalyptic number.

166663307 is a deficient number, since it is larger than the sum of its proper divisors (12996853).

166663307 is a wasteful number, since it uses less digits than its factorization.

166663307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 166663307 is about 12909.8143673718. The cubic root of 166663307 is about 550.3175103326.

The spelling of 166663307 in words is "one hundred sixty-six million, six hundred sixty-three thousand, three hundred seven".