634543417 has 2 divisors, whose sum is σ = 634543418. Its totient is φ = 634543416.

The previous prime is 634543397. The next prime is 634543453. The reversal of 634543417 is 714345436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608164921 + 26378496 = 24661^2 + 5136^2 .

It is a cyclic number.

It is not a de Polignac number, because 634543417 - 2¹⁹ = 634019129 is a prime.

It is not a weakly prime, because it can be changed into another prime (634543517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317271708 + 317271709.

It is an arithmetic number, because the mean of its divisors is an integer number (317271709).

Almost surely, 2^634543417 is an apocalyptic number.

It is an amenable number.

634543417 is a deficient number, since it is larger than the sum of its proper divisors (1).

634543417 is an equidigital number, since it uses as much as digits as its factorization.

634543417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 37.

The square root of 634543417 is about 25190.1452357862. The cubic root of 634543417 is about 859.3177467127.

The spelling of 634543417 in words is "six hundred thirty-four million, five hundred forty-three thousand, four hundred seventeen".