634522667 has 2 divisors, whose sum is σ = 634522668. Its totient is φ = 634522666.

The previous prime is 634522649. The next prime is 634522673. The reversal of 634522667 is 766225436.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634522667 is a prime.

It is not a weakly prime, because it can be changed into another prime (634122667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317261333 + 317261334.

It is an arithmetic number, because the mean of its divisors is an integer number (317261334).

Almost surely, 2^634522667 is an apocalyptic number.

634522667 is a deficient number, since it is larger than the sum of its proper divisors (1).

634522667 is an equidigital number, since it uses as much as digits as its factorization.

634522667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 41.

The square root of 634522667 is about 25189.7333650041. The cubic root of 634522667 is about 859.3083798529.

The spelling of 634522667 in words is "six hundred thirty-four million, five hundred twenty-two thousand, six hundred sixty-seven".