8112861 has 6 divisors (see below), whose sum is σ = 11718590. Its totient is φ = 5408568.

The previous prime is 8112857. The next prime is 8112911. The reversal of 8112861 is 1682118.

It can be written as a sum of positive squares in only one way, i.e., 6502500 + 1610361 = 2550^2 + 1269^2 .

It is not a de Polignac number, because 8112861 - 2² = 8112857 is a prime.

It is a Duffinian number.

8112861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8112821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 450706 + ... + 450723.

Almost surely, 2^8112861 is an apocalyptic number.

It is an amenable number.

8112861 is a deficient number, since it is larger than the sum of its proper divisors (3605729).

8112861 is a wasteful number, since it uses less digits than its factorization.

8112861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901435 (or 901432 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 8112861 is about 2848.3084453760. The cubic root of 8112861 is about 200.9361198949.

Adding to 8112861 its reverse (1682118), we get a palindrome (9794979).

The spelling of 8112861 in words is "eight million, one hundred twelve thousand, eight hundred sixty-one".