166833887 has 12 divisors (see below), whose sum is σ = 185180136. Its totient is φ = 149062320.

The previous prime is 166833857. The next prime is 166833893. The reversal of 166833887 is 788338661.

It is not a de Polignac number, because 166833887 - 2¹⁴ = 166817503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166833827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36113 + ... + 40469.

It is an arithmetic number, because the mean of its divisors is an integer number (15431678).

Almost surely, 2^166833887 is an apocalyptic number.

166833887 is a deficient number, since it is larger than the sum of its proper divisors (18346249).

166833887 is an equidigital number, since it uses as much as digits as its factorization.

166833887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4486 (or 4427 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 166833887 is about 12916.4192793514. The cubic root of 166833887 is about 550.5051964214.

The spelling of 166833887 in words is "one hundred sixty-six million, eight hundred thirty-three thousand, eight hundred eighty-seven".