863960 has 16 divisors (see below), whose sum is σ = 1944000. Its totient is φ = 345568.

The previous prime is 863959. The next prime is 863983. The reversal of 863960 is 69368.

It is a happy number.

It is a congruent number.

It is an unprimeable 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, 10760 + ... + 10839.

It is an arithmetic number, because the mean of its divisors is an integer number (121500).

2⁸⁶³⁹⁶⁰ is an apocalyptic number.

It is an amenable number.

863960 is an abundant number, since it is smaller than the sum of its proper divisors (1080040).

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

863960 is a wasteful number, since it uses less digits than its factorization.

863960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21610 (or 21606 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 863960 is about 929.4944862666. The cubic root of 863960 is about 95.2425932796.

The spelling of 863960 in words is "eight hundred sixty-three thousand, nine hundred sixty".