863214561 has 48 divisors (see below), whose sum is σ = 1423698432. Its totient is φ = 499219200.

The previous prime is 863214529. The next prime is 863214577. The reversal of 863214561 is 165412368.

It is a happy number.

863214561 is a `hidden beast` number, since 8 + 632 + 14 + 5 + 6 + 1 = 666.

It is not a de Polignac number, because 863214561 - 2⁵ = 863214529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (863212561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 222111 + ... + 225963.

It is an arithmetic number, because the mean of its divisors is an integer number (29660384).

Almost surely, 2^863214561 is an apocalyptic number.

It is an amenable number.

863214561 is a deficient number, since it is larger than the sum of its proper divisors (560483871).

863214561 is a wasteful number, since it uses less digits than its factorization.

863214561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974 (or 3971 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 863214561 is about 29380.5132868709. The cubic root of 863214561 is about 952.1519310192.

The spelling of 863214561 in words is "eight hundred sixty-three million, two hundred fourteen thousand, five hundred sixty-one".