634445 has 8 divisors (see below), whose sum is σ = 870144. Its totient is φ = 435024.

The previous prime is 634441. The next prime is 634471. The reversal of 634445 is 544436.

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

It is a cyclic number.

It is not a de Polignac number, because 634445 - 2² = 634441 is a prime.

It is a Duffinian number.

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 634445.

It is not an unprimeable number, because it can be changed into a prime (634441) by changing a digit.

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, 9029 + ... + 9098.

It is an arithmetic number, because the mean of its divisors is an integer number (108768).

2⁶³⁴⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

634445 is a deficient number, since it is larger than the sum of its proper divisors (235699).

634445 is a wasteful number, since it uses less digits than its factorization.

634445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18139.

The product of its digits is 5760, while the sum is 26.

The square root of 634445 is about 796.5205584290. The cubic root of 634445 is about 85.9273317997.

Subtracting from 634445 its reverse (544436), we obtain a palindrome (90009).

The spelling of 634445 in words is "six hundred thirty-four thousand, four hundred forty-five".