13976561 has 2 divisors, whose sum is σ = 13976562. Its totient is φ = 13976560.

The previous prime is 13976551. The next prime is 13976587. The reversal of 13976561 is 16567931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9486400 + 4490161 = 3080^2 + 2119^2 .

It is a cyclic number.

It is not a de Polignac number, because 13976561 - 2¹⁰ = 13975537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13976551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6988280 + 6988281.

It is an arithmetic number, because the mean of its divisors is an integer number (6988281).

Almost surely, 2^13976561 is an apocalyptic number.

It is an amenable number.

13976561 is a deficient number, since it is larger than the sum of its proper divisors (1).

13976561 is an equidigital number, since it uses as much as digits as its factorization.

13976561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 38.

The square root of 13976561 is about 3738.5239065706. The cubic root of 13976561 is about 240.8796481316.

The spelling of 13976561 in words is "thirteen million, nine hundred seventy-six thousand, five hundred sixty-one".