2645879 has 2 divisors, whose sum is σ = 2645880. Its totient is φ = 2645878.

The previous prime is 2645861. The next prime is 2645887. The reversal of 2645879 is 9785462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2645879 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 6⁷ + 4⁹ + 5 + 8⁷ + 7² + 9⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322939 + 1322940.

It is an arithmetic number, because the mean of its divisors is an integer number (1322940).

2^2645879 is an apocalyptic number.

2645879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645879 is an equidigital number, since it uses as much as digits as its factorization.

2645879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 2645879 is about 1626.6158120466. The cubic root of 2645879 is about 138.3109804046.

The spelling of 2645879 in words is "two million, six hundred forty-five thousand, eight hundred seventy-nine".