634535 has 16 divisors (see below), whose sum is σ = 846720. Its totient is φ = 452640.

The previous prime is 634531. The next prime is 634541. The reversal of 634535 is 535436.

It is not a de Polignac number, because 634535 - 2² = 634531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4496 + ... + 4634.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2⁶³⁴⁵³⁵ is an apocalyptic number.

634535 is a deficient number, since it is larger than the sum of its proper divisors (212185).

634535 is a wasteful number, since it uses less digits than its factorization.

634535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238.

The product of its digits is 5400, while the sum is 26.

The square root of 634535 is about 796.5770521425. The cubic root of 634535 is about 85.9313947178.

Subtracting from 634535 its reverse (535436), we obtain a palindrome (99099).

The spelling of 634535 in words is "six hundred thirty-four thousand, five hundred thirty-five".