663611260 has 48 divisors (see below), whose sum is σ = 1535710176. Its totient is φ = 239323392.

The previous prime is 663611257. The next prime is 663611279. The reversal of 663611260 is 62116366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18499 + ... + 40858.

It is an arithmetic number, because the mean of its divisors is an integer number (31993962).

Almost surely, 2^663611260 is an apocalyptic number.

It is an amenable number.

663611260 is an abundant number, since it is smaller than the sum of its proper divisors (872098916).

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

663611260 is a wasteful number, since it uses less digits than its factorization.

663611260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59422 (or 59420 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 663611260 is about 25760.6533302244. The cubic root of 663611260 is about 872.2438489115.

The spelling of 663611260 in words is "six hundred sixty-three million, six hundred eleven thousand, two hundred sixty".