11564361 has 12 divisors (see below), whose sum is σ = 16808688. Its totient is φ = 7661304.

The previous prime is 11564341. The next prime is 11564363. The reversal of 11564361 is 16346511.

11564361 is a `hidden beast` number, since 1 + 15 + 643 + 6 + 1 = 666.

It is not a de Polignac number, because 11564361 - 2⁶ = 11564297 is a prime.

It is a super-3 number, since 3×11564361³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11564363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2475 + ... + 5408.

It is an arithmetic number, because the mean of its divisors is an integer number (1400724).

Almost surely, 2^11564361 is an apocalyptic number.

It is an amenable number.

11564361 is a deficient number, since it is larger than the sum of its proper divisors (5244327).

11564361 is a wasteful number, since it uses less digits than its factorization.

11564361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052 (or 8049 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 11564361 is about 3400.6412630561. The cubic root of 11564361 is about 226.1381735260.

The spelling of 11564361 in words is "eleven million, five hundred sixty-four thousand, three hundred sixty-one".