635812 has 12 divisors (see below), whose sum is σ = 1161216. Its totient is φ = 304040.

The previous prime is 635809. The next prime is 635813. The reversal of 635812 is 218536.

It is a happy number.

635812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635813) 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, 3364 + ... + 3547.

It is an arithmetic number, because the mean of its divisors is an integer number (96768).

2⁶³⁵⁸¹² is an apocalyptic number.

It is an amenable number.

635812 is a deficient number, since it is larger than the sum of its proper divisors (525404).

635812 is a wasteful number, since it uses less digits than its factorization.

635812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6938 (or 6936 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 635812 is about 797.3782038656. The cubic root of 635812 is about 85.9890016582.

It can be divided in two parts, 635 and 812, that multiplied together give a triangular number (515620 = T₁₀₁₅).

The spelling of 635812 in words is "six hundred thirty-five thousand, eight hundred twelve".