869814563 has 2 divisors, whose sum is σ = 869814564. Its totient is φ = 869814562.

The previous prime is 869814559. The next prime is 869814587. The reversal of 869814563 is 365418968.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 869814563 - 2² = 869814559 is a prime.

It is not a weakly prime, because it can be changed into another prime (869814263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434907281 + 434907282.

It is an arithmetic number, because the mean of its divisors is an integer number (434907282).

Almost surely, 2^869814563 is an apocalyptic number.

869814563 is a deficient number, since it is larger than the sum of its proper divisors (1).

869814563 is an equidigital number, since it uses as much as digits as its factorization.

869814563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 50.

The square root of 869814563 is about 29492.6187884359. The cubic root of 869814563 is about 954.5724402054.

The spelling of 869814563 in words is "eight hundred sixty-nine million, eight hundred fourteen thousand, five hundred sixty-three".