634430005 has 16 divisors (see below), whose sum is σ = 840538944. Its totient is φ = 455841280.

The previous prime is 634429979. The next prime is 634430011. The reversal of 634430005 is 500034436.

It is not a de Polignac number, because 634430005 - 2⁷ = 634429877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 64924 + ... + 74053.

It is an arithmetic number, because the mean of its divisors is an integer number (52533684).

Almost surely, 2^634430005 is an apocalyptic number.

It is an amenable number.

634430005 is a deficient number, since it is larger than the sum of its proper divisors (206108939).

634430005 is a wasteful number, since it uses less digits than its factorization.

634430005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139076.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 634430005 is about 25187.8940167692. The cubic root of 634430005 is about 859.2665483505.

The spelling of 634430005 in words is "six hundred thirty-four million, four hundred thirty thousand, five".