634042571 has 2 divisors, whose sum is σ = 634042572. Its totient is φ = 634042570.

The previous prime is 634042529. The next prime is 634042579. The reversal of 634042571 is 175240436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634042571 - 2¹⁰ = 634041547 is a prime.

It is not a weakly prime, because it can be changed into another prime (634042579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317021285 + 317021286.

It is an arithmetic number, because the mean of its divisors is an integer number (317021286).

Almost surely, 2^634042571 is an apocalyptic number.

634042571 is a deficient number, since it is larger than the sum of its proper divisors (1).

634042571 is an equidigital number, since it uses as much as digits as its factorization.

634042571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 634042571 is about 25180.2019650359. The cubic root of 634042571 is about 859.0916003062.

The spelling of 634042571 in words is "six hundred thirty-four million, forty-two thousand, five hundred seventy-one".