634534 has 4 divisors (see below), whose sum is σ = 951804. Its totient is φ = 317266.

The previous prime is 634531. The next prime is 634541. The reversal of 634534 is 435436.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 634499 and 634508.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158632 + ... + 158635.

It is an arithmetic number, because the mean of its divisors is an integer number (237951).

2⁶³⁴⁵³⁴ is an apocalyptic number.

634534 is a deficient number, since it is larger than the sum of its proper divisors (317270).

634534 is a wasteful number, since it uses less digits than its factorization.

634534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317269.

The product of its digits is 4320, while the sum is 25.

The square root of 634534 is about 796.5764244566. The cubic root of 634534 is about 85.9313495764.

The spelling of 634534 in words is "six hundred thirty-four thousand, five hundred thirty-four".