166382687 has 8 divisors (see below), whose sum is σ = 167650560. Its totient is φ = 165120160.

The previous prime is 166382681. The next prime is 166382701. The reversal of 166382687 is 786283661.

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 166382687 - 2²⁰ = 165334111 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 (166382681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77762 + ... + 79872.

It is an arithmetic number, because the mean of its divisors is an integer number (20956320).

Almost surely, 2^166382687 is an apocalyptic number.

166382687 is a deficient number, since it is larger than the sum of its proper divisors (1267873).

166382687 is a wasteful number, since it uses less digits than its factorization.

166382687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673.

The product of its digits is 580608, while the sum is 47.

The square root of 166382687 is about 12898.9413131466. The cubic root of 166382687 is about 550.0084703930.

The spelling of 166382687 in words is "one hundred sixty-six million, three hundred eighty-two thousand, six hundred eighty-seven".