634513630 has 16 divisors (see below), whose sum is σ = 1166425920. Its totient is φ = 248405152.

The previous prime is 634513603. The next prime is 634513667. The reversal of 634513630 is 36315436.

It is a junction number, because it is equal to n+sod(n) for n = 634513592 and 634513601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674545 + ... + 675484.

It is an arithmetic number, because the mean of its divisors is an integer number (72901620).

Almost surely, 2^634513630 is an apocalyptic number.

634513630 is a deficient number, since it is larger than the sum of its proper divisors (531912290).

634513630 is a wasteful number, since it uses less digits than its factorization.

634513630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350083.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 634513630 is about 25189.5539857299. The cubic root of 634513630 is about 859.3043003524.

It can be divided in two parts, 63451 and 3630, that added together give a square (67081 = 259²).

The spelling of 634513630 in words is "six hundred thirty-four million, five hundred thirteen thousand, six hundred thirty".