11640479 has 4 divisors (see below), whose sum is σ = 11725584. Its totient is φ = 11555376.

The previous prime is 11640463. The next prime is 11640481. The reversal of 11640479 is 97404611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97404611 = 17 ⋅5729683.

It is a cyclic number.

It is not a de Polignac number, because 11640479 - 2⁴ = 11640463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11648479) 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, 42347 + ... + 42620.

It is an arithmetic number, because the mean of its divisors is an integer number (2931396).

Almost surely, 2^11640479 is an apocalyptic number.

11640479 is a deficient number, since it is larger than the sum of its proper divisors (85105).

11640479 is an equidigital number, since it uses as much as digits as its factorization.

11640479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85104.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 11640479 is about 3411.8146198174. The cubic root of 11640479 is about 226.6332450242.

The spelling of 11640479 in words is "eleven million, six hundred forty thousand, four hundred seventy-nine".