663244624 has 40 divisors (see below), whose sum is σ = 1469945600. Its totient is φ = 283989888.

The previous prime is 663244607. The next prime is 663244649. The reversal of 663244624 is 426442366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171577 + ... + 175399.

It is an arithmetic number, because the mean of its divisors is an integer number (36748640).

Almost surely, 2^663244624 is an apocalyptic number.

It is an amenable number.

663244624 is an abundant number, since it is smaller than the sum of its proper divisors (806700976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663244624 is a wasteful number, since it uses less digits than its factorization.

663244624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387 (or 5381 counting only the distinct ones).

The product of its digits is 165888, while the sum is 37.

The square root of 663244624 is about 25753.5361455471. The cubic root of 663244624 is about 872.0831851176.

The spelling of 663244624 in words is "six hundred sixty-three million, two hundred forty-four thousand, six hundred twenty-four".