634327647 has 16 divisors (see below), whose sum is σ = 903454560. Its totient is φ = 394483712.

The previous prime is 634327637. The next prime is 634327669. The reversal of 634327647 is 746723436.

It is a cyclic number.

It is not a de Polignac number, because 634327647 - 2¹¹ = 634325599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 634327599 and 634327608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634327607) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 49272 + ... + 60797.

It is an arithmetic number, because the mean of its divisors is an integer number (56465910).

Almost surely, 2^634327647 is an apocalyptic number.

634327647 is a deficient number, since it is larger than the sum of its proper divisors (269126913).

634327647 is a wasteful number, since it uses less digits than its factorization.

634327647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110202.

The product of its digits is 508032, while the sum is 42.

The square root of 634327647 is about 25185.8620459972. The cubic root of 634327647 is about 859.2203349332.

The spelling of 634327647 in words is "six hundred thirty-four million, three hundred twenty-seven thousand, six hundred forty-seven".