670393 has 4 divisors (see below), whose sum is σ = 693540. Its totient is φ = 647248.

The previous prime is 670379. The next prime is 670399. The reversal of 670393 is 393076.

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 110889 + 559504 = 333^2 + 748^2 .

It is a cyclic number.

It is not a de Polignac number, because 670393 - 2¹⁷ = 539321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670399) 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, 11530 + ... + 11587.

It is an arithmetic number, because the mean of its divisors is an integer number (173385).

2⁶⁷⁰³⁹³ is an apocalyptic number.

It is an amenable number.

670393 is a deficient number, since it is larger than the sum of its proper divisors (23147).

670393 is a wasteful number, since it uses less digits than its factorization.

670393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23146.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 670393 is about 818.7753049525. The cubic root of 670393 is about 87.5205067582.

The spelling of 670393 in words is "six hundred seventy thousand, three hundred ninety-three".