166485636 has 36 divisors (see below), whose sum is σ = 435353100. Its totient is φ = 53581248.

The previous prime is 166485617. The next prime is 166485643. The reversal of 166485636 is 636584661.

166485636 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 8 + 5 + 636 = 666.

166485636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 81108036 + 85377600 = 9006^2 + 9240^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 166485591 and 166485600.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78691 + ... + 80778.

Almost surely, 2^166485636 is an apocalyptic number.

It is an amenable number.

166485636 is an abundant number, since it is smaller than the sum of its proper divisors (268867464).

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

166485636 is a wasteful number, since it uses less digits than its factorization.

166485636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159508 (or 159503 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 166485636 is about 12902.9312948647. The cubic root of 166485636 is about 550.1218859344.

The spelling of 166485636 in words is "one hundred sixty-six million, four hundred eighty-five thousand, six hundred thirty-six".