166661046 has 24 divisors (see below), whose sum is σ = 380104920. Its totient is φ = 52629696.

The previous prime is 166661039. The next prime is 166661123. The reversal of 166661046 is 640166661.

It is a self number, because there is not a number n which added to its sum of digits gives 166661046.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 243315 + ... + 243998.

It is an arithmetic number, because the mean of its divisors is an integer number (15837705).

Almost surely, 2^166661046 is an apocalyptic number.

166661046 is an abundant number, since it is smaller than the sum of its proper divisors (213443874).

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

166661046 is a wasteful number, since it uses less digits than its factorization.

166661046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487340 (or 487337 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 166661046 is about 12909.7267980388. The cubic root of 166661046 is about 550.3150217354.

The spelling of 166661046 in words is "one hundred sixty-six million, six hundred sixty-one thousand, forty-six".