8701666 has 4 divisors (see below), whose sum is σ = 13052502. Its totient is φ = 4350832.

The previous prime is 8701657. The next prime is 8701703. The reversal of 8701666 is 6661078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5621641 + 3080025 = 2371^2 + 1755^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2175415 + ... + 2175418.

Almost surely, 2^8701666 is an apocalyptic number.

8701666 is a deficient number, since it is larger than the sum of its proper divisors (4350836).

8701666 is a wasteful number, since it uses less digits than its factorization.

8701666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350835.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 8701666 is about 2949.8586406809. The cubic root of 8701666 is about 205.6841390549.

The spelling of 8701666 in words is "eight million, seven hundred one thousand, six hundred sixty-six".