11671644 has 12 divisors (see below), whose sum is σ = 27233864. Its totient is φ = 3890544.

The previous prime is 11671637. The next prime is 11671663. The reversal of 11671644 is 44617611.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486307 + ... + 486330.

Almost surely, 2^11671644 is an apocalyptic number.

It is an amenable number.

11671644 is an abundant number, since it is smaller than the sum of its proper divisors (15562220).

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

11671644 is a wasteful number, since it uses less digits than its factorization.

11671644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972644 (or 972642 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 11671644 is about 3416.3787846198. The cubic root of 11671644 is about 226.8353195028.

The spelling of 11671644 in words is "eleven million, six hundred seventy-one thousand, six hundred forty-four".