2641636 has 6 divisors (see below), whose sum is σ = 4622870. Its totient is φ = 1320816.

The previous prime is 2641633. The next prime is 2641637. The reversal of 2641636 is 6361462.

It can be written as a sum of positive squares in only one way, i.e., 2232036 + 409600 = 1494^2 + 640^2 .

It is not an unprimeable number, because it can be changed into a prime (2641631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330201 + ... + 330208.

2^2641636 is an apocalyptic number.

It is an amenable number.

2641636 is a deficient number, since it is larger than the sum of its proper divisors (1981234).

2641636 is a wasteful number, since it uses less digits than its factorization.

2641636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660413 (or 660411 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 2641636 is about 1625.3110471537. The cubic root of 2641636 is about 138.2370078272.

The spelling of 2641636 in words is "two million, six hundred forty-one thousand, six hundred thirty-six".