13287643 has 2 divisors, whose sum is σ = 13287644. Its totient is φ = 13287642.

The previous prime is 13287619. The next prime is 13287697. The reversal of 13287643 is 34678231.

It is a happy number.

13287643 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 is a cyclic number.

It is not a de Polignac number, because 13287643 - 2¹³ = 13279451 is a prime.

It is a super-2 number, since 2×13287643² = 353122912990898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13287599 and 13287608.

It is not a weakly prime, because it can be changed into another prime (13287143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6643821 + 6643822.

It is an arithmetic number, because the mean of its divisors is an integer number (6643822).

Almost surely, 2^13287643 is an apocalyptic number.

13287643 is a deficient number, since it is larger than the sum of its proper divisors (1).

13287643 is an equidigital number, since it uses as much as digits as its factorization.

13287643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 13287643 is about 3645.2219411169. The cubic root of 13287643 is about 236.8550509164.

The spelling of 13287643 in words is "thirteen million, two hundred eighty-seven thousand, six hundred forty-three".