166907873 has 8 divisors (see below), whose sum is σ = 185168160. Its totient is φ = 149162080.

The previous prime is 166907869. The next prime is 166907891. The reversal of 166907873 is 378709661.

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

It is a cyclic number.

It is not a de Polignac number, because 166907873 - 2² = 166907869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166907473) 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 7 ways as a sum of consecutive naturals, for example, 127940 + ... + 129237.

It is an arithmetic number, because the mean of its divisors is an integer number (23146020).

Almost surely, 2^166907873 is an apocalyptic number.

It is an amenable number.

166907873 is a deficient number, since it is larger than the sum of its proper divisors (18260287).

166907873 is a wasteful number, since it uses less digits than its factorization.

166907873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257247.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 166907873 is about 12919.2829909403. The cubic root of 166907873 is about 550.5865621017.

The spelling of 166907873 in words is "one hundred sixty-six million, nine hundred seven thousand, eight hundred seventy-three".