13986761 has 2 divisors, whose sum is σ = 13986762. Its totient is φ = 13986760.

The previous prime is 13986743. The next prime is 13986769. The reversal of 13986761 is 16768931.

13986761 = 2644² + 2645².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6996025 + 6990736 = 2645^2 + 2644^2 .

It is a cyclic number.

It is not a de Polignac number, because 13986761 - 2⁶ = 13986697 is a prime.

It is a super-2 number, since 2×13986761² = 391258966542242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13986769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6993380 + 6993381.

It is an arithmetic number, because the mean of its divisors is an integer number (6993381).

Almost surely, 2^13986761 is an apocalyptic number.

13986761 is the 2645-th centered square number.

It is an amenable number.

13986761 is a deficient number, since it is larger than the sum of its proper divisors (1).

13986761 is an equidigital number, since it uses as much as digits as its factorization.

13986761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 13986761 is about 3739.8878325426. The cubic root of 13986761 is about 240.9382313305.

The spelling of 13986761 in words is "thirteen million, nine hundred eighty-six thousand, seven hundred sixty-one".