670342 has 4 divisors (see below), whose sum is σ = 1005516. Its totient is φ = 335170.

The previous prime is 670333. The next prime is 670343. The reversal of 670342 is 243076.

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

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 d-powerful number, because it can be written as 6⁵ + 7² + 3¹² + 0 + 4 + 2¹⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670343) by changing a digit.

670342 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167584 + ... + 167587.

It is an arithmetic number, because the mean of its divisors is an integer number (251379).

2⁶⁷⁰³⁴² is an apocalyptic number.

670342 is a deficient number, since it is larger than the sum of its proper divisors (335174).

670342 is a wasteful number, since it uses less digits than its factorization.

670342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335173.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 670342 is about 818.7441602845. The cubic root of 670342 is about 87.5182873342.

The spelling of 670342 in words is "six hundred seventy thousand, three hundred forty-two".