13675861 has 2 divisors, whose sum is σ = 13675862. Its totient is φ = 13675860.

The previous prime is 13675859. The next prime is 13675873. The reversal of 13675861 is 16857631.

13675861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11628100 + 2047761 = 3410^2 + 1431^2 .

It is a cyclic number.

It is not a de Polignac number, because 13675861 - 2¹ = 13675859 is a prime.

Together with 13675859, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13675861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13675811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6837930 + 6837931.

It is an arithmetic number, because the mean of its divisors is an integer number (6837931).

Almost surely, 2^13675861 is an apocalyptic number.

It is an amenable number.

13675861 is a deficient number, since it is larger than the sum of its proper divisors (1).

13675861 is an equidigital number, since it uses as much as digits as its factorization.

13675861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 13675861 is about 3698.0888307341. The cubic root of 13675861 is about 239.1396335122.

The spelling of 13675861 in words is "thirteen million, six hundred seventy-five thousand, eight hundred sixty-one".