663420585 has 8 divisors (see below), whose sum is σ = 1061472960. Its totient is φ = 353824304.

The previous prime is 663420547. The next prime is 663420599. The reversal of 663420585 is 585024366.

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

It is a cyclic number.

It is not a de Polignac number, because 663420585 - 2¹² = 663416489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22114005 + ... + 22114034.

It is an arithmetic number, because the mean of its divisors is an integer number (132684120).

Almost surely, 2^663420585 is an apocalyptic number.

It is an amenable number.

663420585 is a deficient number, since it is larger than the sum of its proper divisors (398052375).

663420585 is a wasteful number, since it uses less digits than its factorization.

663420585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44228047.

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 663420585 is about 25756.9521682982. The cubic root of 663420585 is about 872.1603004861.

The spelling of 663420585 in words is "six hundred sixty-three million, four hundred twenty thousand, five hundred eighty-five".