670285 has 16 divisors (see below), whose sum is σ = 1003392. Its totient is φ = 417600.

The previous prime is 670279. The next prime is 670297. The reversal of 670285 is 582076.

670285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-670285 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 486 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (62712).

2⁶⁷⁰²⁸⁵ is an apocalyptic number.

It is an amenable number.

670285 is a deficient number, since it is larger than the sum of its proper divisors (333107).

670285 is a wasteful number, since it uses less digits than its factorization.

670285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 670285 is about 818.7093501359. The cubic root of 670285 is about 87.5158066682.

Subtracting from 670285 its reverse (582076), we obtain a square (88209 = 297²).

The spelling of 670285 in words is "six hundred seventy thousand, two hundred eighty-five".