166404726 has 32 divisors (see below), whose sum is σ = 382543200. Its totient is φ = 53555040.

The previous prime is 166404713. The next prime is 166404727. The reversal of 166404726 is 627404661.

166404726 is a `hidden beast` number, since 1 + 6 + 640 + 4 + 7 + 2 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166404727) 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, 51565 + ... + 54696.

It is an arithmetic number, because the mean of its divisors is an integer number (11954475).

Almost surely, 2^166404726 is an apocalyptic number.

166404726 is an abundant number, since it is smaller than the sum of its proper divisors (216138474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166404726 is a wasteful number, since it uses less digits than its factorization.

166404726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106301 (or 106295 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 166404726 is about 12899.7955797757. The cubic root of 166404726 is about 550.0327539722.

The spelling of 166404726 in words is "one hundred sixty-six million, four hundred four thousand, seven hundred twenty-six".