634445000 has 80 divisors (see below), whose sum is σ = 1698956160. Its totient is φ = 217512000.

The previous prime is 634444969. The next prime is 634445003. The reversal of 634445000 is 544436.

It is not an unprimeable number, because it can be changed into a prime (634445003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25937 + ... + 44063.

It is an arithmetic number, because the mean of its divisors is an integer number (21236952).

Almost surely, 2^634445000 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 634445000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849478080).

634445000 is an abundant number, since it is smaller than the sum of its proper divisors (1064511160).

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

634445000 is a wasteful number, since it uses less digits than its factorization.

634445000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18160 (or 18141 counting only the distinct ones).

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

The square root of 634445000 is about 25188.1916778478. The cubic root of 634445000 is about 859.2733179969.

Adding to 634445000 its reverse (544436), we get a palindrome (634989436).

The spelling of 634445000 in words is "six hundred thirty-four million, four hundred forty-five thousand".