670085 has 16 divisors (see below), whose sum is σ = 885360. Its totient is φ = 486720.

The previous prime is 670051. The next prime is 670097. The reversal of 670085 is 580076.

It can be written as a sum of positive squares in 8 ways, for example, as 638401 + 31684 = 799^2 + 178^2 .

It is a de Polignac number, because none of the positive numbers 2^k-670085 is a prime.

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, 10955 + ... + 11015.

It is an arithmetic number, because the mean of its divisors is an integer number (55335).

2⁶⁷⁰⁰⁸⁵ is an apocalyptic number.

670085 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

670085 is a deficient number, since it is larger than the sum of its proper divisors (215275).

670085 is an equidigital number, since it uses as much as digits as its factorization.

670085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 670085 is about 818.5871975544. The cubic root of 670085 is about 87.5071014644.

Subtracting from 670085 its reverse (580076), we obtain a palindrome (90009).

The spelling of 670085 in words is "six hundred seventy thousand, eighty-five".