634395 has 8 divisors (see below), whose sum is σ = 1015056. Its totient is φ = 338336.

The previous prime is 634373. The next prime is 634397. The reversal of 634395 is 593436.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 634395 - 2⁶ = 634331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (634397) 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 7 ways as a sum of consecutive naturals, for example, 21132 + ... + 21161.

It is an arithmetic number, because the mean of its divisors is an integer number (126882).

2⁶³⁴³⁹⁵ is an apocalyptic number.

634395 is a deficient number, since it is larger than the sum of its proper divisors (380661).

634395 is a wasteful number, since it uses less digits than its factorization.

634395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42301.

The product of its digits is 9720, while the sum is 30.

The square root of 634395 is about 796.4891713012. The cubic root of 634395 is about 85.9250744569.

The spelling of 634395 in words is "six hundred thirty-four thousand, three hundred ninety-five".