634469871 has 8 divisors (see below), whose sum is σ = 966811264. Its totient is φ = 362554200.

The previous prime is 634469867. The next prime is 634469887. The reversal of 634469871 is 178964436.

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

It is not a de Polignac number, because 634469871 - 2² = 634469867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 634469871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634469851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15106405 + ... + 15106446.

It is an arithmetic number, because the mean of its divisors is an integer number (120851408).

Almost surely, 2^634469871 is an apocalyptic number.

634469871 is a deficient number, since it is larger than the sum of its proper divisors (332341393).

634469871 is a wasteful number, since it uses less digits than its factorization.

634469871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30212861.

The product of its digits is 870912, while the sum is 48.

The square root of 634469871 is about 25188.6853765733. The cubic root of 634469871 is about 859.2845460295.

The spelling of 634469871 in words is "six hundred thirty-four million, four hundred sixty-nine thousand, eight hundred seventy-one".