11711641 has 4 divisors (see below), whose sum is σ = 11718784. Its totient is φ = 11704500.

The previous prime is 11711639. The next prime is 11711699. The reversal of 11711641 is 14611711.

11711641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a 4-Lehmer number, since φ(11711641) divides (11711641-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 11711641 - 2¹ = 11711639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11711341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256 + ... + 4846.

It is an arithmetic number, because the mean of its divisors is an integer number (2929696).

Almost surely, 2^11711641 is an apocalyptic number.

It is an amenable number.

11711641 is a deficient number, since it is larger than the sum of its proper divisors (7143).

11711641 is an equidigital number, since it uses as much as digits as its factorization.

11711641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142.

The product of its digits is 168, while the sum is 22.

The square root of 11711641 is about 3422.2274909772. The cubic root of 11711641 is about 227.0941344655.

The spelling of 11711641 in words is "eleven million, seven hundred eleven thousand, six hundred forty-one".