13771664 has 20 divisors (see below), whose sum is σ = 27843456. Its totient is φ = 6586272.

The previous prime is 13771663. The next prime is 13771691. The reversal of 13771664 is 46617731.

It is not an unprimeable number, because it can be changed into a prime (13771661) 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, 18344 + ... + 19079.

Almost surely, 2^13771664 is an apocalyptic number.

It is an amenable number.

13771664 is an abundant number, since it is smaller than the sum of its proper divisors (14071792).

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

13771664 is a wasteful number, since it uses less digits than its factorization.

13771664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37454 (or 37448 counting only the distinct ones).

The product of its digits is 21168, while the sum is 35.

The square root of 13771664 is about 3711.0192669939. The cubic root of 13771664 is about 239.6967466134.

The spelling of 13771664 in words is "thirteen million, seven hundred seventy-one thousand, six hundred sixty-four".