670001 has 2 divisors, whose sum is σ = 670002. Its totient is φ = 670000.

The previous prime is 669989. The next prime is 670031. The reversal of 670001 is 100076.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 5776 = 815^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 670001 - 2⁶ = 669937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335000 + 335001.

It is an arithmetic number, because the mean of its divisors is an integer number (335001).

2⁶⁷⁰⁰⁰¹ is an apocalyptic number.

It is an amenable number.

670001 is a deficient number, since it is larger than the sum of its proper divisors (1).

670001 is an equidigital number, since it uses as much as digits as its factorization.

670001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 670001 is about 818.5358880342. The cubic root of 670001 is about 87.5034447623.

Adding to 670001 its reverse (100076), we get a palindrome (770077).

It can be divided in two parts, 6 and 70001, that added together give a palindrome (70007).

The spelling of 670001 in words is "six hundred seventy thousand, one".