166208287 has 16 divisors (see below), whose sum is σ = 195365632. Its totient is φ = 138438720.

The previous prime is 166208279. The next prime is 166208299. The reversal of 166208287 is 782802661.

166208287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166208287 - 2³ = 166208279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166208687) 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, 62203 + ... + 64819.

It is an arithmetic number, because the mean of its divisors is an integer number (12210352).

Almost surely, 2^166208287 is an apocalyptic number.

166208287 is a deficient number, since it is larger than the sum of its proper divisors (29157345).

166208287 is a wasteful number, since it uses less digits than its factorization.

166208287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 166208287 is about 12892.1792959918. The cubic root of 166208287 is about 549.8162328210.

The spelling of 166208287 in words is "one hundred sixty-six million, two hundred eight thousand, two hundred eighty-seven".