13581696 has 64 divisors (see below), whose sum is σ = 36511920. Its totient is φ = 4472832.

The previous prime is 13581671. The next prime is 13581703. The reversal of 13581696 is 69618531.

13581696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43236 + ... + 43548.

Almost surely, 2^13581696 is an apocalyptic number.

13581696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13581696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18255960).

13581696 is an abundant number, since it is smaller than the sum of its proper divisors (22930224).

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

13581696 is a wasteful number, since it uses less digits than its factorization.

13581696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 431 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 13581696 is about 3685.3352629035. The cubic root of 13581696 is about 238.5895044434.

The spelling of 13581696 in words is "thirteen million, five hundred eighty-one thousand, six hundred ninety-six".