634975 has 12 divisors (see below), whose sum is σ = 859320. Its totient is φ = 461600.

The previous prime is 634969. The next prime is 634979. The reversal of 634975 is 579436.

It is not a de Polignac number, because 634975 - 2⁵ = 634943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634979) 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 11 ways as a sum of consecutive naturals, for example, 880 + ... + 1429.

It is an arithmetic number, because the mean of its divisors is an integer number (71610).

2⁶³⁴⁹⁷⁵ is an apocalyptic number.

634975 is a deficient number, since it is larger than the sum of its proper divisors (224345).

634975 is a wasteful number, since it uses less digits than its factorization.

634975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330 (or 2325 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 634975 is about 796.8531859759. The cubic root of 634975 is about 85.9512523446.

The spelling of 634975 in words is "six hundred thirty-four thousand, nine hundred seventy-five".