663467117 has 2 divisors, whose sum is σ = 663467118. Its totient is φ = 663467116.

The previous prime is 663467113. The next prime is 663467141. The reversal of 663467117 is 711764366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600201001 + 63266116 = 24499^2 + 7954^2 .

It is a cyclic number.

It is not a de Polignac number, because 663467117 - 2² = 663467113 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663467111) 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, 331733558 + 331733559.

It is an arithmetic number, because the mean of its divisors is an integer number (331733559).

Almost surely, 2^663467117 is an apocalyptic number.

It is an amenable number.

663467117 is a deficient number, since it is larger than the sum of its proper divisors (1).

663467117 is an equidigital number, since it uses as much as digits as its factorization.

663467117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 41.

The square root of 663467117 is about 25757.8554425635. The cubic root of 663467117 is about 872.1806909771.

The spelling of 663467117 in words is "six hundred sixty-three million, four hundred sixty-seven thousand, one hundred seventeen".