663114509 has 2 divisors, whose sum is σ = 663114510. Its totient is φ = 663114508.

The previous prime is 663114467. The next prime is 663114527. The reversal of 663114509 is 905411366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556818409 + 106296100 = 23597^2 + 10310^2 .

It is a cyclic number.

It is not a de Polignac number, because 663114509 - 2¹⁶ = 663048973 is a prime.

It is a super-2 number, since 2×663114509² = 879441704092622162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663114409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331557254 + 331557255.

It is an arithmetic number, because the mean of its divisors is an integer number (331557255).

Almost surely, 2^663114509 is an apocalyptic number.

It is an amenable number.

663114509 is a deficient number, since it is larger than the sum of its proper divisors (1).

663114509 is an equidigital number, since it uses as much as digits as its factorization.

663114509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 663114509 is about 25751.0098636927. The cubic root of 663114509 is about 872.0261531063.

The spelling of 663114509 in words is "six hundred sixty-three million, one hundred fourteen thousand, five hundred nine".