13981696 has 24 divisors (see below), whose sum is σ = 27960660. Its totient is φ = 6989824.

The previous prime is 13981691. The next prime is 13981727. The reversal of 13981696 is 69618931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1366 + ... + 5461.

Almost surely, 2^13981696 is an apocalyptic number.

13981696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13981696 is a deficient number, since it is larger than the sum of its proper divisors (13978964).

13981696 is an frugal number, since it uses more digits than its factorization.

13981696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6849 (or 6829 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 13981696 is about 3739.2106118805. The cubic root of 13981696 is about 240.9091443132.

The spelling of 13981696 in words is "thirteen million, nine hundred eighty-one thousand, six hundred ninety-six".