663760494 has 40 divisors (see below), whose sum is σ = 1498716648. Its totient is φ = 219557520.

The previous prime is 663760481. The next prime is 663760507. The reversal of 663760494 is 494067366.

663760494 is a `hidden beast` number, since 6 + 6 + 37 + 604 + 9 + 4 = 666.

663760494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (663760481) and next prime (663760507).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5584 + ... + 36860.

Almost surely, 2^663760494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663760494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749358324).

663760494 is an abundant number, since it is smaller than the sum of its proper divisors (834956154).

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

663760494 is a wasteful number, since it uses less digits than its factorization.

663760494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31422 (or 31413 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 663760494 is about 25763.5497166054. The cubic root of 663760494 is about 872.3092278917.

The spelling of 663760494 in words is "six hundred sixty-three million, seven hundred sixty thousand, four hundred ninety-four".