634461729 has 8 divisors (see below), whose sum is σ = 922853472. Its totient is φ = 384522240.

The previous prime is 634461727. The next prime is 634461733. The reversal of 634461729 is 927164436.

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

It is not a de Polignac number, because 634461729 - 2¹ = 634461727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (634461721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9613024 + ... + 9613089.

It is an arithmetic number, because the mean of its divisors is an integer number (115356684).

Almost surely, 2^634461729 is an apocalyptic number.

It is an amenable number.

634461729 is a deficient number, since it is larger than the sum of its proper divisors (288391743).

634461729 is a wasteful number, since it uses less digits than its factorization.

634461729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19226127.

The product of its digits is 217728, while the sum is 42.

The square root of 634461729 is about 25188.5237558695. The cubic root of 634461729 is about 859.2808703495.

The spelling of 634461729 in words is "six hundred thirty-four million, four hundred sixty-one thousand, seven hundred twenty-nine".