13793681 has 12 divisors (see below), whose sum is σ = 15988560. Its totient is φ = 11799360.

The previous prime is 13793653. The next prime is 13793683. The reversal of 13793681 is 18639731.

13793681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13793681 is a prime.

It is a super-2 number, since 2×13793681² = 380531271059522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13793683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1010 + ... + 5348.

It is an arithmetic number, because the mean of its divisors is an integer number (1332380).

Almost surely, 2^13793681 is an apocalyptic number.

13793681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13793681 is a deficient number, since it is larger than the sum of its proper divisors (2194879).

13793681 is a wasteful number, since it uses less digits than its factorization.

13793681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384 (or 4367 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 13793681 is about 3713.9845180076. The cubic root of 13793681 is about 239.8244143958.

The spelling of 13793681 in words is "thirteen million, seven hundred ninety-three thousand, six hundred eighty-one".