11640845 has 4 divisors (see below), whose sum is σ = 13969020. Its totient is φ = 9312672.

The previous prime is 11640817. The next prime is 11640847. The reversal of 11640845 is 54804611.

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 7946761 + 3694084 = 2819^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 11640845 - 2¹⁴ = 11624461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640847) 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, 1164080 + ... + 1164089.

It is an arithmetic number, because the mean of its divisors is an integer number (3492255).

Almost surely, 2^11640845 is an apocalyptic number.

It is an amenable number.

11640845 is a deficient number, since it is larger than the sum of its proper divisors (2328175).

11640845 is an equidigital number, since it uses as much as digits as its factorization.

11640845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328174.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 11640845 is about 3411.8682565422. The cubic root of 11640845 is about 226.6356202672.

The spelling of 11640845 in words is "eleven million, six hundred forty thousand, eight hundred forty-five".