8861690 has 16 divisors (see below), whose sum is σ = 15991560. Its totient is φ = 3535680.

The previous prime is 8861683. The next prime is 8861701. The reversal of 8861690 is 961688.

It can be written as a sum of positive squares in 4 ways, for example, as 5442889 + 3418801 = 2333^2 + 1849^2 .

It is a super-2 number, since 2×8861690² = 157059099312200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4220 + ... + 5960.

Almost surely, 2^8861690 is an apocalyptic number.

8861690 is a deficient number, since it is larger than the sum of its proper divisors (7129870).

8861690 is a wasteful number, since it uses less digits than its factorization.

8861690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 8861690 is about 2976.8590829933. The cubic root of 8861690 is about 206.9373346839.

The spelling of 8861690 in words is "eight million, eight hundred sixty-one thousand, six hundred ninety".