13981677 has 16 divisors (see below), whose sum is σ = 19662720. Its totient is φ = 8819712.

The previous prime is 13981661. The next prime is 13981679. The reversal of 13981677 is 77618931.

It is not a de Polignac number, because 13981677 - 2⁴ = 13981661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5649 + ... + 7737.

It is an arithmetic number, because the mean of its divisors is an integer number (1228920).

Almost surely, 2^13981677 is an apocalyptic number.

It is an amenable number.

13981677 is a deficient number, since it is larger than the sum of its proper divisors (5681043).

13981677 is a wasteful number, since it uses less digits than its factorization.

13981677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212.

The product of its digits is 63504, while the sum is 42.

The square root of 13981677 is about 3739.2080712365. The cubic root of 13981677 is about 240.9090351877.

The spelling of 13981677 in words is "thirteen million, nine hundred eighty-one thousand, six hundred seventy-seven".