838664 has 16 divisors (see below), whose sum is σ = 1593600. Its totient is φ = 413712.

The previous prime is 838657. The next prime is 838667. The reversal of 838664 is 466838.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 1295.

It is an arithmetic number, because the mean of its divisors is an integer number (99600).

2⁸³⁸⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

838664 is a deficient number, since it is larger than the sum of its proper divisors (754936).

838664 is a wasteful number, since it uses less digits than its factorization.

838664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1408 counting only the distinct ones).

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

The square root of 838664 is about 915.7860012033. The cubic root of 838664 is about 94.3038305300.

The spelling of 838664 in words is "eight hundred thirty-eight thousand, six hundred sixty-four".