635298997 has 2 divisors, whose sum is σ = 635298998. Its totient is φ = 635298996.

The previous prime is 635298971. The next prime is 635299037. The reversal of 635298997 is 799892536.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333026001 + 302272996 = 18249^2 + 17386^2 .

It is a cyclic number.

It is not a de Polignac number, because 635298997 - 2¹⁹ = 634774709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (635298907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317649498 + 317649499.

It is an arithmetic number, because the mean of its divisors is an integer number (317649499).

Almost surely, 2^635298997 is an apocalyptic number.

It is an amenable number.

635298997 is a deficient number, since it is larger than the sum of its proper divisors (1).

635298997 is an equidigital number, since it uses as much as digits as its factorization.

635298997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 58.

The square root of 635298997 is about 25205.1383055122. The cubic root of 635298997 is about 859.6586877975.

The spelling of 635298997 in words is "six hundred thirty-five million, two hundred ninety-eight thousand, nine hundred ninety-seven".