634227863 has 2 divisors, whose sum is σ = 634227864. Its totient is φ = 634227862.

The previous prime is 634227859. The next prime is 634227889. The reversal of 634227863 is 368722436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634227863 - 2² = 634227859 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634227863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634227263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317113931 + 317113932.

It is an arithmetic number, because the mean of its divisors is an integer number (317113932).

Almost surely, 2^634227863 is an apocalyptic number.

634227863 is a deficient number, since it is larger than the sum of its proper divisors (1).

634227863 is an equidigital number, since it uses as much as digits as its factorization.

634227863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 634227863 is about 25183.8810154432. The cubic root of 634227863 is about 859.1752788604.

The spelling of 634227863 in words is "six hundred thirty-four million, two hundred twenty-seven thousand, eight hundred sixty-three".