634806 has 12 divisors (see below), whose sum is σ = 1375452. Its totient is φ = 211596.

The previous prime is 634793. The next prime is 634807. The reversal of 634806 is 608436.

It is a self number, because there is not a number n which added to its sum of digits gives 634806.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 634806.

It is not an unprimeable number, because it can be changed into a prime (634807) 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 5 ways as a sum of consecutive naturals, for example, 17616 + ... + 17651.

It is an arithmetic number, because the mean of its divisors is an integer number (114621).

2⁶³⁴⁸⁰⁶ is an apocalyptic number.

634806 is an abundant number, since it is smaller than the sum of its proper divisors (740646).

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

634806 is a wasteful number, since it uses less digits than its factorization.

634806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35275 (or 35272 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 634806 is about 796.7471368006. The cubic root of 634806 is about 85.9436262960.

The spelling of 634806 in words is "six hundred thirty-four thousand, eight hundred six".