166663273 has 8 divisors (see below), whose sum is σ = 190622592. Its totient is φ = 142741536.

The previous prime is 166663229. The next prime is 166663279. The reversal of 166663273 is 372366661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-166663273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166663279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 861 + ... + 18277.

It is an arithmetic number, because the mean of its divisors is an integer number (23827824).

Almost surely, 2^166663273 is an apocalyptic number.

It is an amenable number.

166663273 is a deficient number, since it is larger than the sum of its proper divisors (23959319).

166663273 is a wasteful number, since it uses less digits than its factorization.

166663273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18791.

The product of its digits is 163296, while the sum is 40.

The square root of 166663273 is about 12909.8130505441. The cubic root of 166663273 is about 550.3174729103.

The spelling of 166663273 in words is "one hundred sixty-six million, six hundred sixty-three thousand, two hundred seventy-three".