635020 has 12 divisors (see below), whose sum is σ = 1333584. Its totient is φ = 254000.

The previous prime is 635003. The next prime is 635021. The reversal of 635020 is 20536.

It is a junction number, because it is equal to n+sod(n) for n = 634985 and 635003.

It is not an unprimeable number, because it can be changed into a prime (635021) 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, 15856 + ... + 15895.

It is an arithmetic number, because the mean of its divisors is an integer number (111132).

2⁶³⁵⁰²⁰ is an apocalyptic number.

It is an amenable number.

635020 is an abundant number, since it is smaller than the sum of its proper divisors (698564).

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

635020 is a wasteful number, since it uses less digits than its factorization.

635020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31760 (or 31758 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 635020 is about 796.8814215428. The cubic root of 635020 is about 85.9532827211.

Adding to 635020 its reverse (20536), we get a palindrome (655556).

The spelling of 635020 in words is "six hundred thirty-five thousand, twenty".