670109 has 4 divisors (see below), whose sum is σ = 731040. Its totient is φ = 609180.

The previous prime is 670099. The next prime is 670129. The reversal of 670109 is 901076.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 670109 - 2⁸ = 669853 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 670109.

It is not an unprimeable number, because it can be changed into a prime (670129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30449 + ... + 30470.

It is an arithmetic number, because the mean of its divisors is an integer number (182760).

2⁶⁷⁰¹⁰⁹ is an apocalyptic number.

It is an amenable number.

670109 is a deficient number, since it is larger than the sum of its proper divisors (60931).

670109 is a wasteful number, since it uses less digits than its factorization.

670109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60930.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 670109 is about 818.6018568266. The cubic root of 670109 is about 87.5081461803.

The spelling of 670109 in words is "six hundred seventy thousand, one hundred nine".