2638717 has 2 divisors, whose sum is σ = 2638718. Its totient is φ = 2638716.

The previous prime is 2638697. The next prime is 2638747. The reversal of 2638717 is 7178362.

2638717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1359556 + 1279161 = 1166^2 + 1131^2 .

It is a cyclic number.

It is not a de Polignac number, because 2638717 - 2⁷ = 2638589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2638747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319358 + 1319359.

It is an arithmetic number, because the mean of its divisors is an integer number (1319359).

2^2638717 is an apocalyptic number.

It is an amenable number.

2638717 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638717 is an equidigital number, since it uses as much as digits as its factorization.

2638717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 34.

The square root of 2638717 is about 1624.4128169896. The cubic root of 2638717 is about 138.1860718991.

The spelling of 2638717 in words is "two million, six hundred thirty-eight thousand, seven hundred seventeen".