670312 has 16 divisors (see below), whose sum is σ = 1311840. Its totient is φ = 320496.

The previous prime is 670303. The next prime is 670321. The reversal of 670312 is 213076.

It is an interprime number because it is at equal distance from previous prime (670303) and next prime (670321).

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 670312.

It is an unprimeable number.

670312 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 3 ways as a sum of consecutive naturals, for example, 1638 + ... + 2005.

It is an arithmetic number, because the mean of its divisors is an integer number (81990).

2⁶⁷⁰³¹² is an apocalyptic number.

It is an amenable number.

670312 is a deficient number, since it is larger than the sum of its proper divisors (641528).

670312 is a wasteful number, since it uses less digits than its factorization.

670312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 670312 is about 818.7258393382. The cubic root of 670312 is about 87.5169817380.

Adding to 670312 its reverse (213076), we get a palindrome (883388).

The spelling of 670312 in words is "six hundred seventy thousand, three hundred twelve".