166723047 has 12 divisors (see below), whose sum is σ = 240962904. Its totient is φ = 111083760.

The previous prime is 166723031. The next prime is 166723079. The reversal of 166723047 is 740327661.

It is not a de Polignac number, because 166723047 - 2⁴ = 166723031 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166723087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14833 + ... + 23525.

It is an arithmetic number, because the mean of its divisors is an integer number (20080242).

Almost surely, 2^166723047 is an apocalyptic number.

166723047 is a deficient number, since it is larger than the sum of its proper divisors (74239857).

166723047 is a wasteful number, since it uses less digits than its factorization.

166723047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10830 (or 10827 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 166723047 is about 12912.1279036416. The cubic root of 166723047 is about 550.3832557394.

The spelling of 166723047 in words is "one hundred sixty-six million, seven hundred twenty-three thousand, forty-seven".