8166687 has 8 divisors (see below), whose sum is σ = 10917936. Its totient is φ = 5429952.

The previous prime is 8166659. The next prime is 8166727. The reversal of 8166687 is 7866618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8166687 - 2⁷ = 8166559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8166887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2238 + ... + 4619.

It is an arithmetic number, because the mean of its divisors is an integer number (1364742).

Almost surely, 2^8166687 is an apocalyptic number.

8166687 is a deficient number, since it is larger than the sum of its proper divisors (2751249).

8166687 is a wasteful number, since it uses less digits than its factorization.

8166687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7257.

The product of its digits is 96768, while the sum is 42.

The square root of 8166687 is about 2857.7415908371. The cubic root of 8166687 is about 201.3795210637.

It can be divided in two parts, 816 and 6687, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 8166687 in words is "eight million, one hundred sixty-six thousand, six hundred eighty-seven".