670278 has 16 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 191496.

The previous prime is 670261. The next prime is 670279. The reversal of 670278 is 872076.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670279) by changing a digit.

670278 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7938 + ... + 8021.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2⁶⁷⁰²⁷⁸ is an apocalyptic number.

670278 is an abundant number, since it is smaller than the sum of its proper divisors (861882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670278 is a wasteful number, since it uses less digits than its factorization.

670278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15971.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 670278 is about 818.7050751034. The cubic root of 670278 is about 87.5155020153.

The spelling of 670278 in words is "six hundred seventy thousand, two hundred seventy-eight".