634608 has 80 divisors (see below), whose sum is σ = 1979040. Its totient is φ = 193536.

The previous prime is 634603. The next prime is 634609. The reversal of 634608 is 806436.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634603) 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 15 ways as a sum of consecutive naturals, for example, 5560 + ... + 5672.

It is an arithmetic number, because the mean of its divisors is an integer number (24738).

2⁶³⁴⁶⁰⁸ 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 634608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989520).

634608 is an abundant number, since it is smaller than the sum of its proper divisors (1344432).

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

634608 is a wasteful number, since it uses less digits than its factorization.

634608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 634608 is about 796.6228718785. The cubic root of 634608 is about 85.9346899136.

The spelling of 634608 in words is "six hundred thirty-four thousand, six hundred eight".