2645843 has 2 divisors, whose sum is σ = 2645844. Its totient is φ = 2645842.

The previous prime is 2645831. The next prime is 2645849. The reversal of 2645843 is 3485462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2645843 - 2⁴ = 2645827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2645849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322921 + 1322922.

It is an arithmetic number, because the mean of its divisors is an integer number (1322922).

2^2645843 is an apocalyptic number.

2645843 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645843 is an equidigital number, since it uses as much as digits as its factorization.

2645843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 32.

The square root of 2645843 is about 1626.6047460892. The cubic root of 2645843 is about 138.3103531124.

The spelling of 2645843 in words is "two million, six hundred forty-five thousand, eight hundred forty-three".