11611864 has 32 divisors (see below), whose sum is σ = 23961600. Its totient is φ = 5231520.

The previous prime is 11611843. The next prime is 11611871. The reversal of 11611864 is 46811611.

11611864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 10657 + ... + 11695.

It is an arithmetic number, because the mean of its divisors is an integer number (748800).

Almost surely, 2^11611864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11611864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11980800).

11611864 is an abundant number, since it is smaller than the sum of its proper divisors (12349736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11611864 is a wasteful number, since it uses less digits than its factorization.

11611864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183 (or 1179 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 11611864 is about 3407.6185232505. The cubic root of 11611864 is about 226.4473869353.

It can be divided in two parts, 1161 and 1864, that added together give a square (3025 = 55²).

The spelling of 11611864 in words is "eleven million, six hundred eleven thousand, eight hundred sixty-four".