670613 has 2 divisors, whose sum is σ = 670614. Its totient is φ = 670612.

The previous prime is 670597. The next prime is 670619. The reversal of 670613 is 316076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418609 + 252004 = 647^2 + 502^2 .

It is a cyclic number.

It is not a de Polignac number, because 670613 - 2⁴ = 670597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670619) 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 as a sum of consecutive naturals, namely, 335306 + 335307.

It is an arithmetic number, because the mean of its divisors is an integer number (335307).

2⁶⁷⁰⁶¹³ is an apocalyptic number.

It is an amenable number.

670613 is a deficient number, since it is larger than the sum of its proper divisors (1).

670613 is an equidigital number, since it uses as much as digits as its factorization.

670613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 670613 is about 818.9096409251. The cubic root of 670613 is about 87.5300794545.

Adding to 670613 its reverse (316076), we get a palindrome (986689).

It can be divided in two parts, 6706 and 13, that multiplied together give a palindrome (87178).

The spelling of 670613 in words is "six hundred seventy thousand, six hundred thirteen".