11881611 has 24 divisors (see below), whose sum is σ = 19799520. Its totient is φ = 6725376.

The previous prime is 11881591. The next prime is 11881673. The reversal of 11881611 is 11618811.

11881611 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11881611 - 2¹⁰ = 11880587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11881511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6285 + ... + 7953.

It is an arithmetic number, because the mean of its divisors is an integer number (824980).

Almost surely, 2^11881611 is an apocalyptic number.

11881611 is a deficient number, since it is larger than the sum of its proper divisors (7917909).

11881611 is a wasteful number, since it uses less digits than its factorization.

11881611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795 (or 1792 counting only the distinct ones).

The product of its digits is 384, while the sum is 27.

The square root of 11881611 is about 3446.9712792537. The cubic root of 11881611 is about 228.1874612475.

The spelling of 11881611 in words is "eleven million, eight hundred eighty-one thousand, six hundred eleven".