663243696 has 180 divisors, whose sum is σ = 1977382368. Its totient is φ = 207357696.

The previous prime is 663243689. The next prime is 663243703. The reversal of 663243696 is 696342366.

It is a happy number.

663243696 is a `hidden beast` number, since 6 + 632 + 4 + 3 + 6 + 9 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (663243689) and next prime (663243703).

It is a nude number because it is divisible by every one of its digits.

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 35 ways as a sum of consecutive naturals, for example, 12514006 + ... + 12514058.

Almost surely, 2^663243696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663243696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988691184).

663243696 is an abundant number, since it is smaller than the sum of its proper divisors (1314138672).

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

663243696 is a wasteful number, since it uses less digits than its factorization.

663243696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 148 counting only the distinct ones).

The product of its digits is 839808, while the sum is 45.

The square root of 663243696 is about 25753.5181285975. The cubic root of 663243696 is about 872.0827783830.

The spelling of 663243696 in words is "six hundred sixty-three million, two hundred forty-three thousand, six hundred ninety-six".