634163287 has 2 divisors, whose sum is σ = 634163288. Its totient is φ = 634163286.

The previous prime is 634163281. The next prime is 634163351. The reversal of 634163287 is 782361436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634163287 - 2³ = 634163279 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634163281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317081643 + 317081644.

It is an arithmetic number, because the mean of its divisors is an integer number (317081644).

Almost surely, 2^634163287 is an apocalyptic number.

634163287 is a deficient number, since it is larger than the sum of its proper divisors (1).

634163287 is an equidigital number, since it uses as much as digits as its factorization.

634163287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 634163287 is about 25182.5988928863. The cubic root of 634163287 is about 859.1461179498.

The spelling of 634163287 in words is "six hundred thirty-four million, one hundred sixty-three thousand, two hundred eighty-seven".