634812 has 12 divisors (see below), whose sum is σ = 1481256. Its totient is φ = 211600.

The previous prime is 634807. The next prime is 634817. The reversal of 634812 is 218436.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (634807) and next prime (634817).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 634812.

It is not an unprimeable number, because it can be changed into a prime (634817) by changing a digit.

634812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26439 + ... + 26462.

It is an arithmetic number, because the mean of its divisors is an integer number (123438).

2⁶³⁴⁸¹² is an apocalyptic number.

It is an amenable number.

634812 is an abundant number, since it is smaller than the sum of its proper divisors (846444).

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

634812 is a wasteful number, since it uses less digits than its factorization.

634812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52908 (or 52906 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 634812 is about 796.7509021018. The cubic root of 634812 is about 85.9438970665.

It can be divided in two parts, 6348 and 12, that multiplied together give a square (76176 = 276²).

The spelling of 634812 in words is "six hundred thirty-four thousand, eight hundred twelve".