11640275 has 6 divisors (see below), whose sum is σ = 14433972. Its totient is φ = 9312200.

The previous prime is 11640271. The next prime is 11640313. The reversal of 11640275 is 57204611.

11640275 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11640275 - 2² = 11640271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11640271) 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, 232781 + ... + 232830.

It is an arithmetic number, because the mean of its divisors is an integer number (2405662).

Almost surely, 2^11640275 is an apocalyptic number.

11640275 is a deficient number, since it is larger than the sum of its proper divisors (2793697).

11640275 is an equidigital number, since it uses as much as digits as its factorization.

11640275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465621 (or 465616 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 11640275 is about 3411.7847235721. The cubic root of 11640275 is about 226.6319210967.

Adding to 11640275 its reverse (57204611), we get a palindrome (68844886).

The spelling of 11640275 in words is "eleven million, six hundred forty thousand, two hundred seventy-five".