636465413 has 2 divisors, whose sum is σ = 636465414. Its totient is φ = 636465412.

The previous prime is 636465409. The next prime is 636465419. The reversal of 636465413 is 314564636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 517699009 + 118766404 = 22753^2 + 10898^2 .

It is a cyclic number.

It is not a de Polignac number, because 636465413 - 2² = 636465409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636465419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318232706 + 318232707.

It is an arithmetic number, because the mean of its divisors is an integer number (318232707).

Almost surely, 2^636465413 is an apocalyptic number.

It is an amenable number.

636465413 is a deficient number, since it is larger than the sum of its proper divisors (1).

636465413 is an equidigital number, since it uses as much as digits as its factorization.

636465413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 38.

The square root of 636465413 is about 25228.2661512836. The cubic root of 636465413 is about 860.1844804347.

The spelling of 636465413 in words is "six hundred thirty-six million, four hundred sixty-five thousand, four hundred thirteen".