863004321 has 32 divisors (see below), whose sum is σ = 1352459520. Its totient is φ = 542754432.

The previous prime is 863004293. The next prime is 863004403. The reversal of 863004321 is 123400368.

It is a happy number.

863004321 is a `hidden beast` number, since 8 + 630 + 0 + 4 + 3 + 21 = 666.

It is not a de Polignac number, because 863004321 - 2⁹ = 863003809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (863004221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35815 + ... + 54851.

It is an arithmetic number, because the mean of its divisors is an integer number (42264360).

Almost surely, 2^863004321 is an apocalyptic number.

It is an amenable number.

863004321 is a deficient number, since it is larger than the sum of its proper divisors (489455199).

863004321 is a wasteful number, since it uses less digits than its factorization.

863004321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19142 (or 19136 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 863004321 is about 29376.9351873200. The cubic root of 863004321 is about 952.0746243700.

Adding to 863004321 its reverse (123400368), we get a palindrome (986404689).

The spelling of 863004321 in words is "eight hundred sixty-three million, four thousand, three hundred twenty-one".