663420584 has 24 divisors (see below), whose sum is σ = 1285349130. Its totient is φ = 321006240.

The previous prime is 663420547. The next prime is 663420599. The reversal of 663420584 is 485024366.

It can be written as a sum of positive squares in only one way, i.e., 662032900 + 1387684 = 25730^2 + 1178^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35459 + ... + 50834.

Almost surely, 2^663420584 is an apocalyptic number.

It is an amenable number.

663420584 is a deficient number, since it is larger than the sum of its proper divisors (621928546).

663420584 is a wasteful number, since it uses less digits than its factorization.

663420584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86361 (or 86326 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 663420584 is about 25756.9521488859. The cubic root of 663420584 is about 872.1603000479.

The spelling of 663420584 in words is "six hundred sixty-three million, four hundred twenty thousand, five hundred eighty-four".