166208885 has 8 divisors (see below), whose sum is σ = 200604600. Its totient is φ = 132197824.

The previous prime is 166208869. The next prime is 166208893. The reversal of 166208885 is 588802661.

166208885 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 4 ways, for example, as 30393169 + 135815716 = 5513^2 + 11654^2 .

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 166208885 - 2⁴ = 166208869 is a prime.

It is a congruent number.

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, 95210 + ... + 96939.

It is an arithmetic number, because the mean of its divisors is an integer number (25075575).

Almost surely, 2^166208885 is an apocalyptic number.

It is an amenable number.

166208885 is a deficient number, since it is larger than the sum of its proper divisors (34395715).

166208885 is a wasteful number, since it uses less digits than its factorization.

166208885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192327.

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 166208885 is about 12892.2024883260. The cubic root of 166208885 is about 549.8168922140.

The spelling of 166208885 in words is "one hundred sixty-six million, two hundred eight thousand, eight hundred eighty-five".