863091712 has 66 divisors (see below), whose sum is σ = 1977516632. Its totient is φ = 368830464.

The previous prime is 863091673. The next prime is 863091731. The reversal of 863091712 is 217190368.

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 5 ways as a sum of consecutive naturals, for example, 2487123 + ... + 2487469.

Almost surely, 2^863091712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 863091712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988758316).

863091712 is an abundant number, since it is smaller than the sum of its proper divisors (1114424920).

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

863091712 is an frugal number, since it uses more digits than its factorization.

863091712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 863091712 is about 29378.4225580612. The cubic root of 863091712 is about 952.1067601478.

The spelling of 863091712 in words is "eight hundred sixty-three million, ninety-one thousand, seven hundred twelve".