10561636 has 6 divisors (see below), whose sum is σ = 18482870. Its totient is φ = 5280816.

The previous prime is 10561633. The next prime is 10561643. The reversal of 10561636 is 63616501.

It can be written as a sum of positive squares in only one way, i.e., 10201636 + 360000 = 3194^2 + 600^2 .

It is a super-2 number, since 2×10561636² = 223096309992992, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (10561633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320201 + ... + 1320208.

Almost surely, 2^10561636 is an apocalyptic number.

It is an amenable number.

10561636 is a deficient number, since it is larger than the sum of its proper divisors (7921234).

10561636 is a wasteful number, since it uses less digits than its factorization.

10561636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640413 (or 2640411 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 10561636 is about 3249.8670742047. The cubic root of 10561636 is about 219.4035912389.

The spelling of 10561636 in words is "ten million, five hundred sixty-one thousand, six hundred thirty-six".