13065643 has 2 divisors, whose sum is σ = 13065644. Its totient is φ = 13065642.

The previous prime is 13065629. The next prime is 13065649. The reversal of 13065643 is 34656031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13065643 - 2⁹ = 13065131 is a prime.

It is a super-2 number, since 2×13065643² = 341422054006898, which contains 22 as substring.

It is equal to p₈₅₃₂₁₉ and since 13065643 and 853219 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13065649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6532821 + 6532822.

It is an arithmetic number, because the mean of its divisors is an integer number (6532822).

Almost surely, 2^13065643 is an apocalyptic number.

13065643 is a deficient number, since it is larger than the sum of its proper divisors (1).

13065643 is an equidigital number, since it uses as much as digits as its factorization.

13065643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 13065643 is about 3614.6428592601. The cubic root of 13065643 is about 235.5285703021.

The spelling of 13065643 in words is "thirteen million, sixty-five thousand, six hundred forty-three".