8193866 has 4 divisors (see below), whose sum is σ = 12290802. Its totient is φ = 4096932.

The previous prime is 8193859. The next prime is 8193877. The reversal of 8193866 is 6683918.

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: 6683918 = 2 ⋅3341959.

It can be written as a sum of positive squares in only one way, i.e., 6105841 + 2088025 = 2471^2 + 1445^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2048465 + ... + 2048468.

Almost surely, 2^8193866 is an apocalyptic number.

8193866 is a deficient number, since it is larger than the sum of its proper divisors (4096936).

8193866 is a wasteful number, since it uses less digits than its factorization.

8193866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096935.

The product of its digits is 62208, while the sum is 41.

The square root of 8193866 is about 2862.4929694237. The cubic root of 8193866 is about 201.6026728933.

The spelling of 8193866 in words is "eight million, one hundred ninety-three thousand, eight hundred sixty-six".