609917563 has 2 divisors, whose sum is σ = 609917564. Its totient is φ = 609917562.

The previous prime is 609917533. The next prime is 609917573. The reversal of 609917563 is 365719906.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 609917563 - 2¹⁷ = 609786491 is a prime.

It is not a weakly prime, because it can be changed into another prime (609917513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304958781 + 304958782.

It is an arithmetic number, because the mean of its divisors is an integer number (304958782).

Almost surely, 2^609917563 is an apocalyptic number.

609917563 is a deficient number, since it is larger than the sum of its proper divisors (1).

609917563 is an equidigital number, since it uses as much as digits as its factorization.

609917563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 609917563 is about 24696.5091257854. The cubic root of 609917563 is about 848.0544026411.

The spelling of 609917563 in words is "six hundred nine million, nine hundred seventeen thousand, five hundred sixty-three".