634340505 has 8 divisors (see below), whose sum is σ = 1014944832. Its totient is φ = 338314928.

The previous prime is 634340471. The next prime is 634340527. The reversal of 634340505 is 505043436.

634340505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 634340505 - 2¹³ = 634332313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21144669 + ... + 21144698.

It is an arithmetic number, because the mean of its divisors is an integer number (126868104).

Almost surely, 2^634340505 is an apocalyptic number.

It is an amenable number.

634340505 is a deficient number, since it is larger than the sum of its proper divisors (380604327).

634340505 is a wasteful number, since it uses less digits than its factorization.

634340505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42289375.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 634340505 is about 25186.1173069610. The cubic root of 634340505 is about 859.2261404400.

The spelling of 634340505 in words is "six hundred thirty-four million, three hundred forty thousand, five hundred five".