565388987 has 2 divisors, whose sum is σ = 565388988. Its totient is φ = 565388986.

The previous prime is 565388953. The next prime is 565389007. The reversal of 565388987 is 789883565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 565388987 - 2⁸ = 565388731 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (565388927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282694493 + 282694494.

It is an arithmetic number, because the mean of its divisors is an integer number (282694494).

Almost surely, 2^565388987 is an apocalyptic number.

565388987 is a deficient number, since it is larger than the sum of its proper divisors (1).

565388987 is an equidigital number, since it uses as much as digits as its factorization.

565388987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14515200, while the sum is 59.

The square root of 565388987 is about 23777.9096431961. The cubic root of 565388987 is about 826.8926181876.

The spelling of 565388987 in words is "five hundred sixty-five million, three hundred eighty-eight thousand, nine hundred eighty-seven".