638846 has 8 divisors (see below), whose sum is σ = 1032024. Its totient is φ = 294840.

The previous prime is 638839. The next prime is 638857. The reversal of 638846 is 648836.

It is a sphenic number, since it is the product of 3 distinct primes.

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 638846.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12260 + ... + 12311.

It is an arithmetic number, because the mean of its divisors is an integer number (129003).

2⁶³⁸⁸⁴⁶ is an apocalyptic number.

638846 is a deficient number, since it is larger than the sum of its proper divisors (393178).

638846 is a wasteful number, since it uses less digits than its factorization.

638846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24586.

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

The square root of 638846 is about 799.2784245806. The cubic root of 638846 is about 86.1255602377.

The spelling of 638846 in words is "six hundred thirty-eight thousand, eight hundred forty-six".