2636863 has 2 divisors, whose sum is σ = 2636864. Its totient is φ = 2636862.

The previous prime is 2636857. The next prime is 2636873. The reversal of 2636863 is 3686362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2636863 - 2⁵ = 2636831 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2636813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1318431 + 1318432.

It is an arithmetic number, because the mean of its divisors is an integer number (1318432).

2^2636863 is an apocalyptic number.

2636863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2636863 is an equidigital number, since it uses as much as digits as its factorization.

2636863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 2636863 is about 1623.8420489690. The cubic root of 2636863 is about 138.1537004848.

The spelling of 2636863 in words is "two million, six hundred thirty-six thousand, eight hundred sixty-three".