863996 has 24 divisors (see below), whose sum is σ = 1760640. Its totient is φ = 363312.

The previous prime is 863983. The next prime is 864007. The reversal of 863996 is 699368.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1391 + ... + 1913.

It is an arithmetic number, because the mean of its divisors is an integer number (73360).

2⁸⁶³⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

863996 is an abundant number, since it is smaller than the sum of its proper divisors (896644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

863996 is a wasteful number, since it uses less digits than its factorization.

863996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 591 counting only the distinct ones).

The product of its digits is 69984, while the sum is 41.

The square root of 863996 is about 929.5138514299. The cubic root of 863996 is about 95.2439161363.

Subtracting from 863996 its sum of digits (41), we obtain a triangular number (863955 = T₁₃₁₄).

The spelling of 863996 in words is "eight hundred sixty-three thousand, nine hundred ninety-six".