11564945 has 8 divisors (see below), whose sum is σ = 15860544. Its totient is φ = 7930224.

The previous prime is 11564921. The next prime is 11564951. The reversal of 11564945 is 54946511.

11564945 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11564945 - 2¹⁰ = 11563921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 330427 = 11564945 / (1 + 1 + 5 + 6 + 4 + 9 + 4 + 5).

11564945 is strictly pandigital in base 8.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165179 + ... + 165248.

It is an arithmetic number, because the mean of its divisors is an integer number (1982568).

Almost surely, 2^11564945 is an apocalyptic number.

It is an amenable number.

11564945 is a deficient number, since it is larger than the sum of its proper divisors (4295599).

11564945 is an equidigital number, since it uses as much as digits as its factorization.

11564945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330439.

The product of its digits is 21600, while the sum is 35.

The square root of 11564945 is about 3400.7271281301. The cubic root of 11564945 is about 226.1419801196.

The spelling of 11564945 in words is "eleven million, five hundred sixty-four thousand, nine hundred forty-five".