863640304 has 10 divisors (see below), whose sum is σ = 1673303120. Its totient is φ = 431820144.

The previous prime is 863640287. The next prime is 863640361. The reversal of 863640304 is 403046368.

It is a super-3 number, since 3×863640304³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 863640304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26988744 + ... + 26988775.

It is an arithmetic number, because the mean of its divisors is an integer number (167330312).

Almost surely, 2^863640304 is an apocalyptic number.

It is an amenable number.

863640304 is a deficient number, since it is larger than the sum of its proper divisors (809662816).

863640304 is a wasteful number, since it uses less digits than its factorization.

863640304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53977527 (or 53977521 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 863640304 is about 29387.7577232425. The cubic root of 863640304 is about 952.3084411200.

The spelling of 863640304 in words is "eight hundred sixty-three million, six hundred forty thousand, three hundred four".