2636489 has 4 divisors (see below), whose sum is σ = 2645124. Its totient is φ = 2627856.

The previous prime is 2636483. The next prime is 2636503. The reversal of 2636489 is 9846362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1459264 + 1177225 = 1208^2 + 1085^2 .

It is a cyclic number.

It is not a de Polignac number, because 2636489 - 2⁸ = 2636233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2636483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842 + ... + 4475.

It is an arithmetic number, because the mean of its divisors is an integer number (661281).

2^2636489 is an apocalyptic number.

It is an amenable number.

2636489 is a deficient number, since it is larger than the sum of its proper divisors (8635).

2636489 is an equidigital number, since it uses as much as digits as its factorization.

2636489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8634.

The product of its digits is 62208, while the sum is 38.

The square root of 2636489 is about 1623.7268859017. The cubic root of 2636489 is about 138.1471684899.

It can be divided in two parts, 2636 and 489, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2636489 in words is "two million, six hundred thirty-six thousand, four hundred eighty-nine".