13877681 has 8 divisors (see below), whose sum is σ = 14119200. Its totient is φ = 13638240.

The previous prime is 13877651. The next prime is 13877687. The reversal of 13877681 is 18677831.

13877681 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13877681 - 2¹⁰ = 13876657 is a prime.

It is a super-2 number, since 2×13877681² = 385180059875522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13877687) 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, 18410 + ... + 19148.

It is an arithmetic number, because the mean of its divisors is an integer number (1764900).

Almost surely, 2^13877681 is an apocalyptic number.

It is an amenable number.

13877681 is a deficient number, since it is larger than the sum of its proper divisors (241519).

13877681 is an equidigital number, since it uses as much as digits as its factorization.

13877681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039.

The product of its digits is 56448, while the sum is 41.

The square root of 13877681 is about 3725.2759629321. The cubic root of 13877681 is about 240.3102526926.

The spelling of 13877681 in words is "thirteen million, eight hundred seventy-seven thousand, six hundred eighty-one".