13706881 has 2 divisors, whose sum is σ = 13706882. Its totient is φ = 13706880.

The previous prime is 13706851. The next prime is 13706933. The reversal of 13706881 is 18860731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12666481 + 1040400 = 3559^2 + 1020^2 .

It is an emirp because it is prime and its reverse (18860731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13706881 - 2⁷ = 13706753 is a prime.

It is a super-2 number, since 2×13706881² = 375757173496322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13706851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6853440 + 6853441.

It is an arithmetic number, because the mean of its divisors is an integer number (6853441).

Almost surely, 2^13706881 is an apocalyptic number.

It is an amenable number.

13706881 is a deficient number, since it is larger than the sum of its proper divisors (1).

13706881 is an equidigital number, since it uses as much as digits as its factorization.

13706881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 13706881 is about 3702.2805134133. The cubic root of 13706881 is about 239.3203048871.

The spelling of 13706881 in words is "thirteen million, seven hundred six thousand, eight hundred eighty-one".