8263861 has 4 divisors (see below), whose sum is σ = 8269612. Its totient is φ = 8258112.

The previous prime is 8263859. The next prime is 8263889. The reversal of 8263861 is 1683628.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6599761 + 1664100 = 2569^2 + 1290^2 .

It is a cyclic number.

It is not a de Polignac number, because 8263861 - 2¹ = 8263859 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 (8263961) 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, 1375 + ... + 4291.

It is an arithmetic number, because the mean of its divisors is an integer number (2067403).

Almost surely, 2^8263861 is an apocalyptic number.

It is an amenable number.

8263861 is a deficient number, since it is larger than the sum of its proper divisors (5751).

8263861 is a wasteful number, since it uses less digits than its factorization.

8263861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750.

The product of its digits is 13824, while the sum is 34.

The square root of 8263861 is about 2874.6932010216. The cubic root of 8263861 is about 202.1751005991.

The spelling of 8263861 in words is "eight million, two hundred sixty-three thousand, eight hundred sixty-one".