863063221 has 8 divisors (see below), whose sum is σ = 886771800. Its totient is φ = 839374848.

The previous prime is 863063213. The next prime is 863063231. The reversal of 863063221 is 122360368.

It can be written as a sum of positive squares in 4 ways, for example, as 249956100 + 613107121 = 15810^2 + 24761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 863063221 - 2³ = 863063213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863063231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130605 + ... + 137053.

It is an arithmetic number, because the mean of its divisors is an integer number (110846475).

Almost surely, 2^863063221 is an apocalyptic number.

It is an amenable number.

863063221 is a deficient number, since it is larger than the sum of its proper divisors (23708579).

863063221 is a wasteful number, since it uses less digits than its factorization.

863063221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10103.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 863063221 is about 29377.9376573646. The cubic root of 863063221 is about 952.0962835585.

The spelling of 863063221 in words is "eight hundred sixty-three million, sixty-three thousand, two hundred twenty-one".