663602887 has 2 divisors, whose sum is σ = 663602888. Its totient is φ = 663602886.

The previous prime is 663602879. The next prime is 663602897. The reversal of 663602887 is 788206366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 663602887 - 2³ = 663602879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663602827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331801443 + 331801444.

It is an arithmetic number, because the mean of its divisors is an integer number (331801444).

Almost surely, 2^663602887 is an apocalyptic number.

663602887 is a deficient number, since it is larger than the sum of its proper divisors (1).

663602887 is an equidigital number, since it uses as much as digits as its factorization.

663602887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 663602887 is about 25760.4908144235. The cubic root of 663602887 is about 872.2401804342.

The spelling of 663602887 in words is "six hundred sixty-three million, six hundred two thousand, eight hundred eighty-seven".