2636606461 has 2 divisors, whose sum is σ = 2636606462. Its totient is φ = 2636606460.

The previous prime is 2636606443. The next prime is 2636606471. The reversal of 2636606461 is 1646066362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2399138361 + 237468100 = 48981^2 + 15410^2 .

It is a cyclic number.

It is not a de Polignac number, because 2636606461 - 2⁵ = 2636606429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2636606411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1318303230 + 1318303231.

It is an arithmetic number, because the mean of its divisors is an integer number (1318303231).

Almost surely, 2^2636606461 is an apocalyptic number.

It is an amenable number.

2636606461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2636606461 is an equidigital number, since it uses as much as digits as its factorization.

2636606461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 2636606461 is about 51347.8963639213. The cubic root of 2636606461 is about 1381.4922003950.

The spelling of 2636606461 in words is "two billion, six hundred thirty-six million, six hundred six thousand, four hundred sixty-one".