636526061 has 2 divisors, whose sum is σ = 636526062. Its totient is φ = 636526060.

The previous prime is 636526039. The next prime is 636526073. The reversal of 636526061 is 160625636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 520296100 + 116229961 = 22810^2 + 10781^2 .

It is a cyclic number.

It is not a de Polignac number, because 636526061 - 2¹⁰ = 636525037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636526001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318263030 + 318263031.

It is an arithmetic number, because the mean of its divisors is an integer number (318263031).

Almost surely, 2^636526061 is an apocalyptic number.

It is an amenable number.

636526061 is a deficient number, since it is larger than the sum of its proper divisors (1).

636526061 is an equidigital number, since it uses as much as digits as its factorization.

636526061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 636526061 is about 25229.4681077505. The cubic root of 636526061 is about 860.2118015378.

The spelling of 636526061 in words is "six hundred thirty-six million, five hundred twenty-six thousand, sixty-one".