663790268 has 12 divisors (see below), whose sum is σ = 1163722392. Its totient is φ = 331298160.

The previous prime is 663790261. The next prime is 663790273. The reversal of 663790268 is 862097366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663790261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146738 + ... + 151193.

It is an arithmetic number, because the mean of its divisors is an integer number (96976866).

Almost surely, 2^663790268 is an apocalyptic number.

It is an amenable number.

663790268 is a deficient number, since it is larger than the sum of its proper divisors (499932124).

663790268 is a wasteful number, since it uses less digits than its factorization.

663790268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298492 (or 298490 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 663790268 is about 25764.1275419914. The cubic root of 663790268 is about 872.3222706216.

The spelling of 663790268 in words is "six hundred sixty-three million, seven hundred ninety thousand, two hundred sixty-eight".