863956 has 12 divisors (see below), whose sum is σ = 1547392. Its totient is φ = 421848.

The previous prime is 863921. The next prime is 863959. The reversal of 863956 is 659368.

It is a pancake number, because a pancake can be divided into 863956 parts by 1314 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863959) by changing a digit.

863956 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 2340 + ... + 2683.

2⁸⁶³⁹⁵⁶ is an apocalyptic number.

863956 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

863956 is a deficient number, since it is larger than the sum of its proper divisors (683436).

863956 is a wasteful number, since it uses less digits than its factorization.

863956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070 (or 5068 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 863956 is about 929.4923345569. The cubic root of 863956 is about 95.2424462933.

The spelling of 863956 in words is "eight hundred sixty-three thousand, nine hundred fifty-six".