808604663 has 4 divisors (see below), whose sum is σ = 809283648. Its totient is φ = 807925680.

The previous prime is 808604659. The next prime is 808604669. The reversal of 808604663 is 366406808.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 808604663 - 2² = 808604659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 808604663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808604669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337703 + ... + 340088.

It is an arithmetic number, because the mean of its divisors is an integer number (202320912).

Almost surely, 2^808604663 is an apocalyptic number.

808604663 is a deficient number, since it is larger than the sum of its proper divisors (678985).

808604663 is a wasteful number, since it uses less digits than its factorization.

808604663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678984.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 808604663 is about 28435.9748030554. The cubic root of 808604663 is about 931.6341803730.

The spelling of 808604663 in words is "eight hundred eight million, six hundred four thousand, six hundred sixty-three".