863256966 has 64 divisors (see below), whose sum is σ = 2062851840. Its totient is φ = 237363840.

The previous prime is 863256959. The next prime is 863256967. The reversal of 863256966 is 669652368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863256967) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 42096 + ... + 59148.

It is an arithmetic number, because the mean of its divisors is an integer number (32232060).

Almost surely, 2^863256966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 863256966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031425920).

863256966 is an abundant number, since it is smaller than the sum of its proper divisors (1199594874).

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

863256966 is a wasteful number, since it uses less digits than its factorization.

863256966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17141.

The product of its digits is 2799360, while the sum is 51.

The square root of 863256966 is about 29381.2349297983. The cubic root of 863256966 is about 952.1675220991.

The spelling of 863256966 in words is "eight hundred sixty-three million, two hundred fifty-six thousand, nine hundred sixty-six".