634641463 has 2 divisors, whose sum is σ = 634641464. Its totient is φ = 634641462.

The previous prime is 634641443. The next prime is 634641473. The reversal of 634641463 is 364146436.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634641463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634641443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317320731 + 317320732.

It is an arithmetic number, because the mean of its divisors is an integer number (317320732).

Almost surely, 2^634641463 is an apocalyptic number.

634641463 is a deficient number, since it is larger than the sum of its proper divisors (1).

634641463 is an equidigital number, since it uses as much as digits as its factorization.

634641463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 37.

The square root of 634641463 is about 25192.0912788121. The cubic root of 634641463 is about 859.3620033790.

Adding to 634641463 its reverse (364146436), we get a palindrome (998787899).

The spelling of 634641463 in words is "six hundred thirty-four million, six hundred forty-one thousand, four hundred sixty-three".