2638579 has 2 divisors, whose sum is σ = 2638580. Its totient is φ = 2638578.

The previous prime is 2638567. The next prime is 2638589. The reversal of 2638579 is 9758362.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2638579 is a prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (2638529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319289 + 1319290.

It is an arithmetic number, because the mean of its divisors is an integer number (1319290).

2^2638579 is an apocalyptic number.

2638579 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638579 is an equidigital number, since it uses as much as digits as its factorization.

2638579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 2638579 is about 1624.3703395470. The cubic root of 2638579 is about 138.1836628988.

The spelling of 2638579 in words is "two million, six hundred thirty-eight thousand, five hundred seventy-nine".