634830 has 32 divisors (see below), whose sum is σ = 1741824. Its totient is φ = 145056.

The previous prime is 634817. The next prime is 634841. The reversal of 634830 is 38436.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 634830.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1302 + ... + 1721.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2⁶³⁴⁸³⁰ is an apocalyptic number.

634830 is an abundant number, since it is smaller than the sum of its proper divisors (1106994).

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

634830 is a wasteful number, since it uses less digits than its factorization.

634830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 634830 is about 796.7621978985. The cubic root of 634830 is about 85.9447093676.

The spelling of 634830 in words is "six hundred thirty-four thousand, eight hundred thirty".