867563 has 2 divisors, whose sum is σ = 867564. Its totient is φ = 867562.

The previous prime is 867553. The next prime is 867571. The reversal of 867563 is 365768.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 867563 - 2⁴ = 867547 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 867563.

It is not a weakly prime, because it can be changed into another prime (867553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433781 + 433782.

It is an arithmetic number, because the mean of its divisors is an integer number (433782).

2⁸⁶⁷⁵⁶³ is an apocalyptic number.

867563 is a deficient number, since it is larger than the sum of its proper divisors (1).

867563 is an equidigital number, since it uses as much as digits as its factorization.

867563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 867563 is about 931.4306200679. The cubic root of 867563 is about 95.3748074009.

The spelling of 867563 in words is "eight hundred sixty-seven thousand, five hundred sixty-three".