2645887 has 2 divisors, whose sum is σ = 2645888. Its totient is φ = 2645886.

The previous prime is 2645879. The next prime is 2645891. The reversal of 2645887 is 7885462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2645887 - 2³ = 2645879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322943 + 1322944.

It is an arithmetic number, because the mean of its divisors is an integer number (1322944).

2^2645887 is an apocalyptic number.

2645887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645887 is an equidigital number, since it uses as much as digits as its factorization.

2645887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 2645887 is about 1626.6182711380. The cubic root of 2645887 is about 138.3111198021.

The spelling of 2645887 in words is "two million, six hundred forty-five thousand, eight hundred eighty-seven".