8505986 has 4 divisors (see below), whose sum is σ = 12758982. Its totient is φ = 4252992.

The previous prime is 8505979. The next prime is 8505989. The reversal of 8505986 is 6895058.

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., 7392961 + 1113025 = 2719^2 + 1055^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8505989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2126495 + ... + 2126498.

Almost surely, 2^8505986 is an apocalyptic number.

8505986 is a deficient number, since it is larger than the sum of its proper divisors (4252996).

8505986 is a wasteful number, since it uses less digits than its factorization.

8505986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252995.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 8505986 is about 2916.5023572766. The cubic root of 8505986 is about 204.1306512806.

The spelling of 8505986 in words is "eight million, five hundred five thousand, nine hundred eighty-six".