838705 has 16 divisors (see below), whose sum is σ = 1188864. Its totient is φ = 555840.

The previous prime is 838693. The next prime is 838711. The reversal of 838705 is 507838.

It is not a de Polignac number, because 838705 - 2⁹ = 838193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699 + ... + 1471.

It is an arithmetic number, because the mean of its divisors is an integer number (74304).

2⁸³⁸⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

838705 is a deficient number, since it is larger than the sum of its proper divisors (350159).

838705 is a wasteful number, since it uses less digits than its factorization.

838705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 838705 is about 915.8083860721. The cubic root of 838705 is about 94.3053672575.

The spelling of 838705 in words is "eight hundred thirty-eight thousand, seven hundred five".