635152897 has 2 divisors, whose sum is σ = 635152898. Its totient is φ = 635152896.

The previous prime is 635152891. The next prime is 635152909. The reversal of 635152897 is 798251536.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399960001 + 235192896 = 19999^2 + 15336^2 .

It is a cyclic number.

It is not a de Polignac number, because 635152897 - 2²³ = 626764289 is a prime.

It is not a weakly prime, because it can be changed into another prime (635152891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317576448 + 317576449.

It is an arithmetic number, because the mean of its divisors is an integer number (317576449).

Almost surely, 2^635152897 is an apocalyptic number.

It is an amenable number.

635152897 is a deficient number, since it is larger than the sum of its proper divisors (1).

635152897 is an equidigital number, since it uses as much as digits as its factorization.

635152897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 46.

The square root of 635152897 is about 25202.2399202928. The cubic root of 635152897 is about 859.5927840452.

The spelling of 635152897 in words is "six hundred thirty-five million, one hundred fifty-two thousand, eight hundred ninety-seven".