636052061 has 2 divisors, whose sum is σ = 636052062. Its totient is φ = 636052060.

The previous prime is 636052057. The next prime is 636052073. The reversal of 636052061 is 160250636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 359860900 + 276191161 = 18970^2 + 16619^2 .

It is a cyclic number.

It is not a de Polignac number, because 636052061 - 2² = 636052057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636052031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318026030 + 318026031.

It is an arithmetic number, because the mean of its divisors is an integer number (318026031).

Almost surely, 2^636052061 is an apocalyptic number.

It is an amenable number.

636052061 is a deficient number, since it is larger than the sum of its proper divisors (1).

636052061 is an equidigital number, since it uses as much as digits as its factorization.

636052061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 636052061 is about 25220.0725811803. The cubic root of 636052061 is about 859.9982247124.

The spelling of 636052061 in words is "six hundred thirty-six million, fifty-two thousand, sixty-one".