2636261 has 2 divisors, whose sum is σ = 2636262. Its totient is φ = 2636260.

The previous prime is 2636251. The next prime is 2636279. The reversal of 2636261 is 1626362.

2636261 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., 2044900 + 591361 = 1430^2 + 769^2 .

It is a cyclic number.

It is not a de Polignac number, because 2636261 - 2⁶ = 2636197 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2636261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2636251) 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, 1318130 + 1318131.

It is an arithmetic number, because the mean of its divisors is an integer number (1318131).

2^2636261 is an apocalyptic number.

It is an amenable number.

2636261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2636261 is an equidigital number, since it uses as much as digits as its factorization.

2636261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 2636261 is about 1623.6566755321. The cubic root of 2636261 is about 138.1431861151.

The spelling of 2636261 in words is "two million, six hundred thirty-six thousand, two hundred sixty-one".