634929 has 4 divisors (see below), whose sum is σ = 846576. Its totient is φ = 423284.

The previous prime is 634927. The next prime is 634937. The reversal of 634929 is 929436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 634929 - 2¹ = 634927 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 634929.

It is not an unprimeable number, because it can be changed into a prime (634927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105819 + ... + 105824.

It is an arithmetic number, because the mean of its divisors is an integer number (211644).

2⁶³⁴⁹²⁹ is an apocalyptic number.

It is an amenable number.

634929 is a deficient number, since it is larger than the sum of its proper divisors (211647).

634929 is a wasteful number, since it uses less digits than its factorization.

634929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211646.

The product of its digits is 11664, while the sum is 33.

The square root of 634929 is about 796.8243219179. The cubic root of 634929 is about 85.9491767494.

The spelling of 634929 in words is "six hundred thirty-four thousand, nine hundred twenty-nine".