863996544 has 160 divisors (see below), whose sum is σ = 2591820000. Its totient is φ = 285700608.

The previous prime is 863996533. The next prime is 863996563. The reversal of 863996544 is 445699368.

863996544 is a `hidden beast` number, since 8 + 6 + 3 + 9 + 96 + 544 = 666.

863996544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1731207 + ... + 1731705.

It is an arithmetic number, because the mean of its divisors is an integer number (16198875).

Almost surely, 2^863996544 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 863996544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1295910000).

863996544 is an abundant number, since it is smaller than the sum of its proper divisors (1727823456).

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

863996544 is a wasteful number, since it uses less digits than its factorization.

863996544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 671 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 863996544 is about 29393.8181255855. The cubic root of 863996544 is about 952.4393612584.

The spelling of 863996544 in words is "eight hundred sixty-three million, nine hundred ninety-six thousand, five hundred forty-four".