863916 has 12 divisors (see below), whose sum is σ = 2015832. Its totient is φ = 287968.

The previous prime is 863909. The next prime is 863917. The reversal of 863916 is 619368.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×863916³ = 1934353335889677888, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (863917) 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, 35985 + ... + 36008.

It is an arithmetic number, because the mean of its divisors is an integer number (167986).

2⁸⁶³⁹¹⁶ is an apocalyptic number.

It is an amenable number.

863916 is an abundant number, since it is smaller than the sum of its proper divisors (1151916).

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

863916 is a wasteful number, since it uses less digits than its factorization.

863916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72000 (or 71998 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 863916 is about 929.4708171858. The cubic root of 863916 is about 95.2409764049.

The spelling of 863916 in words is "eight hundred sixty-three thousand, nine hundred sixteen".