670801 has 4 divisors (see below), whose sum is σ = 687204. Its totient is φ = 654400.

The previous prime is 670781. The next prime is 670811. The reversal of 670801 is 108076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123201 + 547600 = 351^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 670801 - 2⁷ = 670673 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8140 + ... + 8221.

It is an arithmetic number, because the mean of its divisors is an integer number (171801).

2⁶⁷⁰⁸⁰¹ is an apocalyptic number.

It is an amenable number.

670801 is a deficient number, since it is larger than the sum of its proper divisors (16403).

670801 is a wasteful number, since it uses less digits than its factorization.

670801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16402.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 670801 is about 819.0244196604. The cubic root of 670801 is about 87.5382580997.

Adding to 670801 its reverse (108076), we get a palindrome (778877).

It can be divided in two parts, 67080 and 1, that added together give a square (67081 = 259²).

The spelling of 670801 in words is "six hundred seventy thousand, eight hundred one".