2605847 has 2 divisors, whose sum is σ = 2605848. Its totient is φ = 2605846.

The previous prime is 2605819. The next prime is 2605849. The reversal of 2605847 is 7485062.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2605847 is a prime.

Together with 2605849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2605849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302923 + 1302924.

It is an arithmetic number, because the mean of its divisors is an integer number (1302924).

2^2605847 is an apocalyptic number.

2605847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605847 is an equidigital number, since it uses as much as digits as its factorization.

2605847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 2605847 is about 1614.2636092039. The cubic root of 2605847 is about 137.6098868133.

The spelling of 2605847 in words is "two million, six hundred five thousand, eight hundred forty-seven".