634755 has 16 divisors (see below), whose sum is σ = 1108224. Its totient is φ = 307680.

The previous prime is 634747. The next prime is 634757. The reversal of 634755 is 557436.

It is not a de Polignac number, because 634755 - 2³ = 634747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (634757) 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, 1759 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (69264).

2⁶³⁴⁷⁵⁵ is an apocalyptic number.

634755 is a deficient number, since it is larger than the sum of its proper divisors (473469).

634755 is a wasteful number, since it uses less digits than its factorization.

634755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866.

The product of its digits is 12600, while the sum is 30.

The square root of 634755 is about 796.7151310224. The cubic root of 634755 is about 85.9413246783.

The spelling of 634755 in words is "six hundred thirty-four thousand, seven hundred fifty-five".