634336 has 24 divisors (see below), whose sum is σ = 1280664. Its totient is φ = 309120.

The previous prime is 634331. The next prime is 634343. The reversal of 634336 is 633436.

634336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 634336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634331) by changing a digit.

634336 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146 + ... + 1606.

It is an arithmetic number, because the mean of its divisors is an integer number (53361).

2⁶³⁴³³⁶ 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 634336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640332).

634336 is an abundant number, since it is smaller than the sum of its proper divisors (646328).

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

634336 is a wasteful number, since it uses less digits than its factorization.

634336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 506 counting only the distinct ones).

The product of its digits is 3888, while the sum is 25.

The square root of 634336 is about 796.4521328994. The cubic root of 634336 is about 85.9224106399.

Subtracting from 634336 its reverse (633436), we obtain a square (900 = 30²).

The spelling of 634336 in words is "six hundred thirty-four thousand, three hundred thirty-six".