13986764 has 24 divisors (see below), whose sum is σ = 26923008. Its totient is φ = 6305040.

The previous prime is 13986761. The next prime is 13986769. The reversal of 13986764 is 46768931.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (13986761) 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, 4337 + ... + 6839.

It is an arithmetic number, because the mean of its divisors is an integer number (1121792).

Almost surely, 2^13986764 is an apocalyptic number.

It is an amenable number.

13986764 is a deficient number, since it is larger than the sum of its proper divisors (12936244).

13986764 is a wasteful number, since it uses less digits than its factorization.

13986764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645 (or 2643 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 13986764 is about 3739.8882336241. Note that the first 3 decimals coincide. The cubic root of 13986764 is about 240.9382485567.

It can be divided in two parts, 139867 and 64, that added together give a palindrome (139931).

The spelling of 13986764 in words is "thirteen million, nine hundred eighty-six thousand, seven hundred sixty-four".