13971061 has 18 divisors (see below), whose sum is σ = 16036290. Its totient is φ = 12164256.

The previous prime is 13971047. The next prime is 13971073. The reversal of 13971061 is 16017931.

It can be written as a sum of positive squares in 3 ways, for example, as 938961 + 13032100 = 969^2 + 3610^2 .

It is not a de Polignac number, because 13971061 - 2⁷ = 13970933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13971761) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 60895 + ... + 61123.

It is an arithmetic number, because the mean of its divisors is an integer number (890905).

Almost surely, 2^13971061 is an apocalyptic number.

It is an amenable number.

13971061 is a deficient number, since it is larger than the sum of its proper divisors (2065229).

13971061 is a wasteful number, since it uses less digits than its factorization.

13971061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 13971061 is about 3737.7882497541. The cubic root of 13971061 is about 240.8480473231.

Adding to 13971061 its reverse (16017931), we get a palindrome (29988992).

The spelling of 13971061 in words is "thirteen million, nine hundred seventy-one thousand, sixty-one".