7005643 has 2 divisors, whose sum is σ = 7005644. Its totient is φ = 7005642.

The previous prime is 7005637. The next prime is 7005673. The reversal of 7005643 is 3465007.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7005643 is a prime.

It is not a weakly prime, because it can be changed into another prime (7005613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3502821 + 3502822.

It is an arithmetic number, because the mean of its divisors is an integer number (3502822).

Almost surely, 2^7005643 is an apocalyptic number.

7005643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7005643 is an equidigital number, since it uses as much as digits as its factorization.

7005643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 7005643 is about 2646.8175229887. The cubic root of 7005643 is about 191.3445076643.

The spelling of 7005643 in words is "seven million, five thousand, six hundred forty-three".