663240268 has 6 divisors (see below), whose sum is σ = 1160670476. Its totient is φ = 331620132.

The previous prime is 663240247. The next prime is 663240269. The reversal of 663240268 is 862042366.

It is not an unprimeable number, because it can be changed into a prime (663240269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82905030 + ... + 82905037.

Almost surely, 2^663240268 is an apocalyptic number.

It is an amenable number.

663240268 is a deficient number, since it is larger than the sum of its proper divisors (497430208).

663240268 is a wasteful number, since it uses less digits than its factorization.

663240268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165810071 (or 165810069 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 663240268 is about 25753.4515744977. The cubic root of 663240268 is about 872.0812759162.

The spelling of 663240268 in words is "six hundred sixty-three million, two hundred forty thousand, two hundred sixty-eight".