8216986 has 8 divisors (see below), whose sum is σ = 12415860. Its totient is φ = 4078368.

The previous prime is 8216983. The next prime is 8217007. The reversal of 8216986 is 6896128.

It can be written as a sum of positive squares in 2 ways, for example, as 7733961 + 483025 = 2781^2 + 695^2 .

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

It is not an unprimeable number, because it can be changed into a prime (8216983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14721 + ... + 15268.

Almost surely, 2^8216986 is an apocalyptic number.

8216986 is a deficient number, since it is larger than the sum of its proper divisors (4198874).

8216986 is a wasteful number, since it uses less digits than its factorization.

8216986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30128.

The product of its digits is 41472, while the sum is 40.

The square root of 8216986 is about 2866.5285625648. The cubic root of 8216986 is about 201.7921104044.

The spelling of 8216986 in words is "eight million, two hundred sixteen thousand, nine hundred eighty-six".