2639213 has 2 divisors, whose sum is σ = 2639214. Its totient is φ = 2639212.

The previous prime is 2639207. The next prime is 2639239. The reversal of 2639213 is 3129362.

It is an a-pointer prime, because the next prime (2639239) can be obtained adding 2639213 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2550409 + 88804 = 1597^2 + 298^2 .

It is a cyclic number.

It is not a de Polignac number, because 2639213 - 2⁶ = 2639149 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 (2639513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319606 + 1319607.

It is an arithmetic number, because the mean of its divisors is an integer number (1319607).

2^2639213 is an apocalyptic number.

It is an amenable number.

2639213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2639213 is an equidigital number, since it uses as much as digits as its factorization.

2639213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 2639213 is about 1624.5654803670. The cubic root of 2639213 is about 138.1947296417.

The spelling of 2639213 in words is "two million, six hundred thirty-nine thousand, two hundred thirteen".