863115 has 16 divisors (see below), whose sum is σ = 1506816. Its totient is φ = 418400.

The previous prime is 863087. The next prime is 863119. The reversal of 863115 is 511368.

It is not a de Polignac number, because 863115 - 2⁷ = 862987 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 863115.

It is not an unprimeable number, because it can be changed into a prime (863119) 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 15 ways as a sum of consecutive naturals, for example, 2451 + ... + 2780.

It is an arithmetic number, because the mean of its divisors is an integer number (94176).

2⁸⁶³¹¹⁵ is an apocalyptic number.

863115 is a deficient number, since it is larger than the sum of its proper divisors (643701).

863115 is a wasteful number, since it uses less digits than its factorization.

863115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250.

The product of its digits is 720, while the sum is 24.

The square root of 863115 is about 929.0398269181. The cubic root of 863115 is about 95.2115323341.

It can be divided in two parts, 8631 and 15, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 863115 in words is "eight hundred sixty-three thousand, one hundred fifteen".