634876642 has 8 divisors (see below), whose sum is σ = 985153500. Its totient is φ = 306492144.

The previous prime is 634876589. The next prime is 634876667. The reversal of 634876642 is 246678436.

It can be written as a sum of positive squares in 2 ways, for example, as 634082761 + 793881 = 25181^2 + 891^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 634876592 and 634876601.

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 3 ways as a sum of consecutive naturals, for example, 5473017 + ... + 5473132.

Almost surely, 2^634876642 is an apocalyptic number.

634876642 is a deficient number, since it is larger than the sum of its proper divisors (350276858).

634876642 is a wasteful number, since it uses less digits than its factorization.

634876642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10946180.

The product of its digits is 1161216, while the sum is 46.

The square root of 634876642 is about 25196.7585613705. The cubic root of 634876642 is about 859.4681414895.

The spelling of 634876642 in words is "six hundred thirty-four million, eight hundred seventy-six thousand, six hundred forty-two".