663266356 has 12 divisors (see below), whose sum is σ = 1228993668. Its totient is φ = 312125312.

The previous prime is 663266323. The next prime is 663266381. The reversal of 663266356 is 653662366.

It can be written as a sum of positive squares in 2 ways, for example, as 419594256 + 243672100 = 20484^2 + 15610^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4876891 + ... + 4877026.

It is an arithmetic number, because the mean of its divisors is an integer number (102416139).

Almost surely, 2^663266356 is an apocalyptic number.

It is an amenable number.

663266356 is a deficient number, since it is larger than the sum of its proper divisors (565727312).

663266356 is a wasteful number, since it uses less digits than its factorization.

663266356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9753938 (or 9753936 counting only the distinct ones).

The product of its digits is 699840, while the sum is 43.

The square root of 663266356 is about 25753.9580647325. The cubic root of 663266356 is about 872.0927099616.

The spelling of 663266356 in words is "six hundred sixty-three million, two hundred sixty-six thousand, three hundred fifty-six".