663503492 has 24 divisors (see below), whose sum is σ = 1200396120. Its totient is φ = 320682240.

The previous prime is 663503483. The next prime is 663503531. The reversal of 663503492 is 294305366.

It can be written as a sum of positive squares in 4 ways, for example, as 42198016 + 621305476 = 6496^2 + 24926^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 683 + ... + 36434.

It is an arithmetic number, because the mean of its divisors is an integer number (50016505).

Almost surely, 2^663503492 is an apocalyptic number.

It is an amenable number.

663503492 is a deficient number, since it is larger than the sum of its proper divisors (536892628).

663503492 is a wasteful number, since it uses less digits than its factorization.

663503492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37271 (or 37269 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 38.

The square root of 663503492 is about 25758.5615281599. The cubic root of 663503492 is about 872.1966299699.

The spelling of 663503492 in words is "six hundred sixty-three million, five hundred three thousand, four hundred ninety-two".