613660343 has 2 divisors, whose sum is σ = 613660344. Its totient is φ = 613660342.

The previous prime is 613660331. The next prime is 613660351. The reversal of 613660343 is 343066316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 613660343 - 2¹² = 613656247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613660393) 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, 306830171 + 306830172.

It is an arithmetic number, because the mean of its divisors is an integer number (306830172).

Almost surely, 2^613660343 is an apocalyptic number.

613660343 is a deficient number, since it is larger than the sum of its proper divisors (1).

613660343 is an equidigital number, since it uses as much as digits as its factorization.

613660343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 613660343 is about 24772.1687181401. The cubic root of 613660343 is about 849.7855712857.

The spelling of 613660343 in words is "six hundred thirteen million, six hundred sixty thousand, three hundred forty-three".