8406863 has 4 divisors (see below), whose sum is σ = 8420280. Its totient is φ = 8393448.

The previous prime is 8406847. The next prime is 8406901. The reversal of 8406863 is 3686048.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8406863 - 2⁴ = 8406847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8405863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5720 + ... + 7037.

It is an arithmetic number, because the mean of its divisors is an integer number (2105070).

Almost surely, 2^8406863 is an apocalyptic number.

8406863 is a deficient number, since it is larger than the sum of its proper divisors (13417).

8406863 is a wasteful number, since it uses less digits than its factorization.

8406863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13416.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 8406863 is about 2899.4590874851. The cubic root of 8406863 is about 203.3346176275.

The spelling of 8406863 in words is "eight million, four hundred six thousand, eight hundred sixty-three".