11661444 has 36 divisors (see below), whose sum is σ = 29628144. Its totient is φ = 3867312.

The previous prime is 11661407. The next prime is 11661449. The reversal of 11661444 is 44416611.

11661444 is a `hidden beast` number, since 1 + 1 + 6 + 614 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (11661449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7459 + ... + 8885.

It is an arithmetic number, because the mean of its divisors is an integer number (823004).

Almost surely, 2^11661444 is an apocalyptic number.

It is an amenable number.

11661444 is an abundant number, since it is smaller than the sum of its proper divisors (17966700).

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

11661444 is a wasteful number, since it uses less digits than its factorization.

11661444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 1659 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 11661444 is about 3414.8856496228. The cubic root of 11661444 is about 226.7692221423.

The spelling of 11661444 in words is "eleven million, six hundred sixty-one thousand, four hundred forty-four".