863684223 has 16 divisors (see below), whose sum is σ = 1160925696. Its totient is φ = 571136000.

The previous prime is 863684209. The next prime is 863684231. The reversal of 863684223 is 322486368.

It is a cyclic number.

It is not a de Polignac number, because 863684223 - 2⁴ = 863684207 is a prime.

It is a super-2 number, since 2×863684223² = 1491900874118227458, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863684123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191290 + ... + 195752.

It is an arithmetic number, because the mean of its divisors is an integer number (72557856).

Almost surely, 2^863684223 is an apocalyptic number.

863684223 is a deficient number, since it is larger than the sum of its proper divisors (297241473).

863684223 is a wasteful number, since it uses less digits than its factorization.

863684223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4974.

The product of its digits is 331776, while the sum is 42.

The square root of 863684223 is about 29388.5049466624. The cubic root of 863684223 is about 952.3245835369.

The spelling of 863684223 in words is "eight hundred sixty-three million, six hundred eighty-four thousand, two hundred twenty-three".