861113 has 4 divisors (see below), whose sum is σ = 939408. Its totient is φ = 782820.

The previous prime is 861109. The next prime is 861121. The reversal of 861113 is 311168.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 861113 - 2² = 861109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39131 + ... + 39152.

It is an arithmetic number, because the mean of its divisors is an integer number (234852).

2⁸⁶¹¹¹³ is an apocalyptic number.

It is an amenable number.

861113 is a deficient number, since it is larger than the sum of its proper divisors (78295).

861113 is a wasteful number, since it uses less digits than its factorization.

861113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78294.

The product of its digits is 144, while the sum is 20.

The square root of 861113 is about 927.9617449012. The cubic root of 861113 is about 95.1378607861.

Subtracting from 861113 its reverse (311168), we obtain a palindrome (549945).

The spelling of 861113 in words is "eight hundred sixty-one thousand, one hundred thirteen".