634847 has 4 divisors (see below), whose sum is σ = 668280. Its totient is φ = 601416.

The previous prime is 634841. The next prime is 634853. The reversal of 634847 is 748436.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (634841) and next prime (634853).

It is a cyclic number.

It is not a de Polignac number, because 634847 - 2¹⁰ = 633823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634841) 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, 16688 + ... + 16725.

It is an arithmetic number, because the mean of its divisors is an integer number (167070).

2⁶³⁴⁸⁴⁷ is an apocalyptic number.

634847 is a deficient number, since it is larger than the sum of its proper divisors (33433).

634847 is a wasteful number, since it uses less digits than its factorization.

634847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33432.

The product of its digits is 16128, while the sum is 32.

The square root of 634847 is about 796.7728660039. The cubic root of 634847 is about 85.9454765268.

The spelling of 634847 in words is "six hundred thirty-four thousand, eight hundred forty-seven".