670838 has 8 divisors (see below), whose sum is σ = 1150032. Its totient is φ = 287496.

The previous prime is 670823. The next prime is 670849. The reversal of 670838 is 838076.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

670838 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23945 + ... + 23972.

It is an arithmetic number, because the mean of its divisors is an integer number (143754).

2⁶⁷⁰⁸³⁸ is an apocalyptic number.

670838 is a deficient number, since it is larger than the sum of its proper divisors (479194).

670838 is a wasteful number, since it uses less digits than its factorization.

670838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47926.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 670838 is about 819.0470071980. The cubic root of 670838 is about 87.5398675467.

The spelling of 670838 in words is "six hundred seventy thousand, eight hundred thirty-eight".