2628539 has 2 divisors, whose sum is σ = 2628540. Its totient is φ = 2628538.

The previous prime is 2628533. The next prime is 2628541. The reversal of 2628539 is 9358262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2628539 - 2¹⁶ = 2563003 is a prime.

It is a Sophie Germain prime.

Together with 2628541, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 2628499 and 2628508.

It is not a weakly prime, because it can be changed into another prime (2628533) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314269 + 1314270.

It is an arithmetic number, because the mean of its divisors is an integer number (1314270).

2^2628539 is an apocalyptic number.

2628539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2628539 is an equidigital number, since it uses as much as digits as its factorization.

2628539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 2628539 is about 1621.2769658513. The cubic root of 2628539 is about 138.0081735690.

The spelling of 2628539 in words is "two million, six hundred twenty-eight thousand, five hundred thirty-nine".