13575643 has 2 divisors, whose sum is σ = 13575644. Its totient is φ = 13575642.

The previous prime is 13575637. The next prime is 13575647. The reversal of 13575643 is 34657531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13575643 - 2⁹ = 13575131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13575599 and 13575608.

It is not a weakly prime, because it can be changed into another prime (13575647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6787821 + 6787822.

It is an arithmetic number, because the mean of its divisors is an integer number (6787822).

Almost surely, 2^13575643 is an apocalyptic number.

13575643 is a deficient number, since it is larger than the sum of its proper divisors (1).

13575643 is an equidigital number, since it uses as much as digits as its factorization.

13575643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 34.

The square root of 13575643 is about 3684.5139435209. The cubic root of 13575643 is about 238.5540548484.

The spelling of 13575643 in words is "thirteen million, five hundred seventy-five thousand, six hundred forty-three".