8705666 has 8 divisors (see below), whose sum is σ = 13826700. Its totient is φ = 4096768.

The previous prime is 8705657. The next prime is 8705681. The reversal of 8705666 is 6665078.

It can be written as a sum of positive squares in 2 ways, for example, as 6869641 + 1836025 = 2621^2 + 1355^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127991 + ... + 128058.

Almost surely, 2^8705666 is an apocalyptic number.

8705666 is a deficient number, since it is larger than the sum of its proper divisors (5121034).

8705666 is a wasteful number, since it uses less digits than its factorization.

8705666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256068.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 8705666 is about 2950.5365613732. The cubic root of 8705666 is about 205.7156506652.

The spelling of 8705666 in words is "eight million, seven hundred five thousand, six hundred sixty-six".