304020663 has 8 divisors (see below), whose sum is σ = 405442800. Its totient is φ = 202639488.

The previous prime is 304020649. The next prime is 304020679. The reversal of 304020663 is 366020403.

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

It is not a de Polignac number, because 304020663 - 2⁵ = 304020631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304020263) 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, 19053 + ... + 31161.

It is an arithmetic number, because the mean of its divisors is an integer number (50680350).

Almost surely, 2^304020663 is an apocalyptic number.

304020663 is a deficient number, since it is larger than the sum of its proper divisors (101422137).

304020663 is a wasteful number, since it uses less digits than its factorization.

304020663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20481.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 304020663 is about 17436.1883162577. The cubic root of 304020663 is about 672.4103153343.

The spelling of 304020663 in words is "three hundred four million, twenty thousand, six hundred sixty-three".