11600561 has 8 divisors (see below), whose sum is σ = 13363200. Its totient is φ = 9864288.

The previous prime is 11600549. The next prime is 11600591. The reversal of 11600561 is 16500611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11600561 - 2¹⁸ = 11338417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11600591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5636 + ... + 7413.

It is an arithmetic number, because the mean of its divisors is an integer number (1670400).

Almost surely, 2^11600561 is an apocalyptic number.

It is an amenable number.

11600561 is a deficient number, since it is larger than the sum of its proper divisors (1762639).

11600561 is a wasteful number, since it uses less digits than its factorization.

11600561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13183.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 11600561 is about 3405.9596298253. The cubic root of 11600561 is about 226.3738883781.

The spelling of 11600561 in words is "eleven million, six hundred thousand, five hundred sixty-one".