613398329 has 2 divisors, whose sum is σ = 613398330. Its totient is φ = 613398328.

The previous prime is 613398281. The next prime is 613398347. The reversal of 613398329 is 923893316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540330025 + 73068304 = 23245^2 + 8548^2 .

It is a cyclic number.

It is not a de Polignac number, because 613398329 - 2²⁰ = 612349753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 613398329.

It is not a weakly prime, because it can be changed into another prime (613398349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306699164 + 306699165.

It is an arithmetic number, because the mean of its divisors is an integer number (306699165).

Almost surely, 2^613398329 is an apocalyptic number.

It is an amenable number.

613398329 is a deficient number, since it is larger than the sum of its proper divisors (1).

613398329 is an equidigital number, since it uses as much as digits as its factorization.

613398329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 613398329 is about 24766.8796783123. The cubic root of 613398329 is about 849.6646100103.

The spelling of 613398329 in words is "six hundred thirteen million, three hundred ninety-eight thousand, three hundred twenty-nine".