634676 has 24 divisors (see below), whose sum is σ = 1337280. Its totient is φ = 257472.

The previous prime is 634651. The next prime is 634679. The reversal of 634676 is 676436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634679) by changing a digit.

634676 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65 + ... + 1128.

It is an arithmetic number, because the mean of its divisors is an integer number (55720).

2⁶³⁴⁶⁷⁶ is an apocalyptic number.

It is an amenable number.

634676 is an abundant number, since it is smaller than the sum of its proper divisors (702604).

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

634676 is a wasteful number, since it uses less digits than its factorization.

634676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1221 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 634676 is about 796.6655509058. The cubic root of 634676 is about 85.9377591838.

The spelling of 634676 in words is "six hundred thirty-four thousand, six hundred seventy-six".