609968663 has 2 divisors, whose sum is σ = 609968664. Its totient is φ = 609968662.

The previous prime is 609968651. The next prime is 609968693. The reversal of 609968663 is 366869906.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 609968663 - 2¹⁰ = 609967639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609968633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304984331 + 304984332.

It is an arithmetic number, because the mean of its divisors is an integer number (304984332).

Almost surely, 2^609968663 is an apocalyptic number.

609968663 is a deficient number, since it is larger than the sum of its proper divisors (1).

609968663 is an equidigital number, since it uses as much as digits as its factorization.

609968663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 53.

The square root of 609968663 is about 24697.5436632877. The cubic root of 609968663 is about 848.0780858252.

The spelling of 609968663 in words is "six hundred nine million, nine hundred sixty-eight thousand, six hundred sixty-three".