635394 has 8 divisors (see below), whose sum is σ = 1270800. Its totient is φ = 211796.

The previous prime is 635389. The next prime is 635413. The reversal of 635394 is 493536.

It is a happy number.

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

635394 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52944 + ... + 52955.

It is an arithmetic number, because the mean of its divisors is an integer number (158850).

2⁶³⁵³⁹⁴ is an apocalyptic number.

635394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

635394 is a wasteful number, since it uses less digits than its factorization.

635394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105904.

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

The square root of 635394 is about 797.1160517767. The cubic root of 635394 is about 85.9701536957.

The spelling of 635394 in words is "six hundred thirty-five thousand, three hundred ninety-four".