2636009 has 2 divisors, whose sum is σ = 2636010. Its totient is φ = 2636008.

The previous prime is 2635987. The next prime is 2636021. The reversal of 2636009 is 9006362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2166784 + 469225 = 1472^2 + 685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2636009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2636059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1318004 + 1318005.

It is an arithmetic number, because the mean of its divisors is an integer number (1318005).

2^2636009 is an apocalyptic number.

It is an amenable number.

2636009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2636009 is an equidigital number, since it uses as much as digits as its factorization.

2636009 is an evil number, because the sum of its binary digits is even.

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

The square root of 2636009 is about 1623.5790710649. The cubic root of 2636009 is about 138.1387842757.

The spelling of 2636009 in words is "two million, six hundred thirty-six thousand, nine".