635875 has 8 divisors (see below), whose sum is σ = 793728. Its totient is φ = 508600.

The previous prime is 635867. The next prime is 635879. The reversal of 635875 is 578536.

It is a happy number.

It is not a de Polignac number, because 635875 - 2³ = 635867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 635875.

It is not an unprimeable number, because it can be changed into a prime (635879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2419 + ... + 2668.

It is an arithmetic number, because the mean of its divisors is an integer number (99216).

2⁶³⁵⁸⁷⁵ is an apocalyptic number.

635875 is a deficient number, since it is larger than the sum of its proper divisors (157853).

635875 is an equidigital number, since it uses as much as digits as its factorization.

635875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102 (or 5092 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 635875 is about 797.4177073529. The cubic root of 635875 is about 85.9918416634.

The spelling of 635875 in words is "six hundred thirty-five thousand, eight hundred seventy-five".