2536636 has 6 divisors (see below), whose sum is σ = 4439120. Its totient is φ = 1268316.

The previous prime is 2536631. The next prime is 2536643. The reversal of 2536636 is 6366352.

It is a junction number, because it is equal to n+sod(n) for n = 2536598 and 2536607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2536631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317076 + ... + 317083.

2^2536636 is an apocalyptic number.

It is an amenable number.

2536636 is a deficient number, since it is larger than the sum of its proper divisors (1902484).

2536636 is a wasteful number, since it uses less digits than its factorization.

2536636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634163 (or 634161 counting only the distinct ones).

The product of its digits is 19440, while the sum is 31.

The square root of 2536636 is about 1592.6820147161. The cubic root of 2536636 is about 136.3806378263.

It can be divided in two parts, 253 and 6636, that added together give a square (6889 = 83²).

The spelling of 2536636 in words is "two million, five hundred thirty-six thousand, six hundred thirty-six".