634868 has 24 divisors (see below), whose sum is σ = 1240680. Its totient is φ = 282240.

The previous prime is 634861. The next prime is 634871. The reversal of 634868 is 868436.

It can be written as a sum of positive squares in 4 ways, for example, as 13924 + 620944 = 118^2 + 788^2 .

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634861) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1298 + ... + 1718.

It is an arithmetic number, because the mean of its divisors is an integer number (51695).

2⁶³⁴⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

634868 is a deficient number, since it is larger than the sum of its proper divisors (605812).

634868 is a wasteful number, since it uses less digits than its factorization.

634868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 465 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 634868 is about 796.7860440545. The cubic root of 634868 is about 85.9464241752.

The spelling of 634868 in words is "six hundred thirty-four thousand, eight hundred sixty-eight".