670397 has 16 divisors (see below), whose sum is σ = 846720. Its totient is φ = 516672.

The previous prime is 670379. The next prime is 670399. The reversal of 670397 is 793076.

It is not a de Polignac number, because 670397 - 2⁶ = 670333 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4754 + ... + 4892.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2⁶⁷⁰³⁹⁷ is an apocalyptic number.

It is an amenable number.

670397 is a deficient number, since it is larger than the sum of its proper divisors (176323).

670397 is a wasteful number, since it uses less digits than its factorization.

670397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 670397 is about 818.7777476214. Note that the first 4 decimals coincide. The cubic root of 670397 is about 87.5206808259.

The spelling of 670397 in words is "six hundred seventy thousand, three hundred ninety-seven".