166463985 has 8 divisors (see below), whose sum is σ = 266342400. Its totient is φ = 88780784.

The previous prime is 166463951. The next prime is 166464007. The reversal of 166463985 is 589364661.

166463985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 166463985 - 2¹¹ = 166461937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5548785 + ... + 5548814.

It is an arithmetic number, because the mean of its divisors is an integer number (33292800).

Almost surely, 2^166463985 is an apocalyptic number.

166463985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166463985 is a deficient number, since it is larger than the sum of its proper divisors (99878415).

166463985 is a wasteful number, since it uses less digits than its factorization.

166463985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11097607.

The product of its digits is 933120, while the sum is 48.

The square root of 166463985 is about 12902.0922721859. The cubic root of 166463985 is about 550.0980376202.

The spelling of 166463985 in words is "one hundred sixty-six million, four hundred sixty-three thousand, nine hundred eighty-five".