11640249 has 6 divisors (see below), whose sum is σ = 16813706. Its totient is φ = 7760160.

The previous prime is 11640241. The next prime is 11640253. The reversal of 11640249 is 94204611.

11640249 is a `hidden beast` number, since 11 + 640 + 2 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9566649 + 2073600 = 3093^2 + 1440^2 .

It is not a de Polignac number, because 11640249 - 2³ = 11640241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11640241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 646672 + ... + 646689.

Almost surely, 2^11640249 is an apocalyptic number.

It is an amenable number.

11640249 is a deficient number, since it is larger than the sum of its proper divisors (5173457).

11640249 is a wasteful number, since it uses less digits than its factorization.

11640249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293367 (or 1293364 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 11640249 is about 3411.7809132475. The cubic root of 11640249 is about 226.6317523597.

The spelling of 11640249 in words is "eleven million, six hundred forty thousand, two hundred forty-nine".