13666764 has 24 divisors (see below), whose sum is σ = 32752048. Its totient is φ = 4432320.

The previous prime is 13666729. The next prime is 13666769. The reversal of 13666764 is 46766631.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13666769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14947 + ... + 15834.

Almost surely, 2^13666764 is an apocalyptic number.

It is an amenable number.

13666764 is an abundant number, since it is smaller than the sum of its proper divisors (19085284).

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

13666764 is a wasteful number, since it uses less digits than its factorization.

13666764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30825 (or 30823 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 13666764 is about 3696.8586664897. The cubic root of 13666764 is about 239.0865975880.

The spelling of 13666764 in words is "thirteen million, six hundred sixty-six thousand, seven hundred sixty-four".