663490658 has 8 divisors (see below), whose sum is σ = 995438928. Its totient is φ = 331677684.

The previous prime is 663490657. The next prime is 663490661. The reversal of 663490658 is 856094366.

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

It is not an unprimeable number, because it can be changed into a prime (663490657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20516 + ... + 41807.

It is an arithmetic number, because the mean of its divisors is an integer number (124429866).

Almost surely, 2^663490658 is an apocalyptic number.

663490658 is a deficient number, since it is larger than the sum of its proper divisors (331948270).

663490658 is a wasteful number, since it uses less digits than its factorization.

663490658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67648.

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 663490658 is about 25758.3124059011. The cubic root of 663490658 is about 872.1910063654.

The spelling of 663490658 in words is "six hundred sixty-three million, four hundred ninety thousand, six hundred fifty-eight".