11564641 has 8 divisors (see below), whose sum is σ = 13358304. Its totient is φ = 9894720.

The previous prime is 11564629. The next prime is 11564647. The reversal of 11564641 is 14646511.

11564641 is digitally balanced in base 3, because in such base 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 not a de Polignac number, because 11564641 - 2⁷ = 11564513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11564647) 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 7 ways as a sum of consecutive naturals, for example, 30735 + ... + 31108.

It is an arithmetic number, because the mean of its divisors is an integer number (1669788).

Almost surely, 2^11564641 is an apocalyptic number.

11564641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11564641 is a deficient number, since it is larger than the sum of its proper divisors (1793663).

11564641 is a wasteful number, since it uses less digits than its factorization.

11564641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61871.

The product of its digits is 2880, while the sum is 28.

The square root of 11564641 is about 3400.6824315128. The cubic root of 11564641 is about 226.1399986211.

The spelling of 11564641 in words is "eleven million, five hundred sixty-four thousand, six hundred forty-one".