663079787 has 2 divisors, whose sum is σ = 663079788. Its totient is φ = 663079786.

The previous prime is 663079733. The next prime is 663079793. The reversal of 663079787 is 787970366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663079787 - 2²² = 658885483 is a prime.

It is not a weakly prime, because it can be changed into another prime (663070787) 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, 331539893 + 331539894.

It is an arithmetic number, because the mean of its divisors is an integer number (331539894).

Almost surely, 2^663079787 is an apocalyptic number.

663079787 is a deficient number, since it is larger than the sum of its proper divisors (1).

663079787 is an equidigital number, since it uses as much as digits as its factorization.

663079787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2667168, while the sum is 53.

The square root of 663079787 is about 25750.3356677151. The cubic root of 663079787 is about 872.0109324970.

The spelling of 663079787 in words is "six hundred sixty-three million, seventy-nine thousand, seven hundred eighty-seven".