613747361 has 2 divisors, whose sum is σ = 613747362. Its totient is φ = 613747360.

The previous prime is 613747349. The next prime is 613747363. The reversal of 613747361 is 163747316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316840000 + 296907361 = 17800^2 + 17231^2 .

It is a cyclic number.

It is not a de Polignac number, because 613747361 - 2¹⁸ = 613485217 is a prime.

Together with 613747363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (613747363) 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, 306873680 + 306873681.

It is an arithmetic number, because the mean of its divisors is an integer number (306873681).

Almost surely, 2^613747361 is an apocalyptic number.

It is an amenable number.

613747361 is a deficient number, since it is larger than the sum of its proper divisors (1).

613747361 is an equidigital number, since it uses as much as digits as its factorization.

613747361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 613747361 is about 24773.9250220872. The cubic root of 613747361 is about 849.8257363633.

The spelling of 613747361 in words is "six hundred thirteen million, seven hundred forty-seven thousand, three hundred sixty-one".