634346808 has 64 divisors (see below), whose sum is σ = 1682035200. Its totient is φ = 198929280.

The previous prime is 634346807. The next prime is 634346809. The reversal of 634346808 is 808643436.

It is an interprime number because it is at equal distance from previous prime (634346807) and next prime (634346809).

It is a self number, because there is not a number n which added to its sum of digits gives 634346808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634346807) 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, 24253 + ... + 43091.

It is an arithmetic number, because the mean of its divisors is an integer number (26281800).

Almost surely, 2^634346808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634346808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (841017600).

634346808 is an abundant number, since it is smaller than the sum of its proper divisors (1047688392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634346808 is a wasteful number, since it uses less digits than its factorization.

634346808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18932 (or 18928 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The square root of 634346808 is about 25186.2424351073. The cubic root of 634346808 is about 859.2289862745.

The spelling of 634346808 in words is "six hundred thirty-four million, three hundred forty-six thousand, eight hundred eight".