670139 has 2 divisors, whose sum is σ = 670140. Its totient is φ = 670138.

The previous prime is 670129. The next prime is 670147. The reversal of 670139 is 931076.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670139 - 2¹⁶ = 604603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335069 + 335070.

It is an arithmetic number, because the mean of its divisors is an integer number (335070).

2⁶⁷⁰¹³⁹ is an apocalyptic number.

670139 is a deficient number, since it is larger than the sum of its proper divisors (1).

670139 is an equidigital number, since it uses as much as digits as its factorization.

670139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 670139 is about 818.6201805477. The cubic root of 670139 is about 87.5094520401.

The spelling of 670139 in words is "six hundred seventy thousand, one hundred thirty-nine".