8105866 has 4 divisors (see below), whose sum is σ = 12158802. Its totient is φ = 4052932.

The previous prime is 8105813. The next prime is 8105869. The reversal of 8105866 is 6685018.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6685018 = 2 ⋅3342509.

It can be written as a sum of positive squares in only one way, i.e., 5452225 + 2653641 = 2335^2 + 1629^2 .

It is a zygodrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (8105869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2026465 + ... + 2026468.

Almost surely, 2^8105866 is an apocalyptic number.

8105866 is a deficient number, since it is larger than the sum of its proper divisors (4052936).

8105866 is a wasteful number, since it uses less digits than its factorization.

8105866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052935.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 8105866 is about 2847.0802587915. The cubic root of 8105866 is about 200.8783534952.

The spelling of 8105866 in words is "eight million, one hundred five thousand, eight hundred sixty-six".