613243247 has 2 divisors, whose sum is σ = 613243248. Its totient is φ = 613243246.

The previous prime is 613243243. The next prime is 613243303. The reversal of 613243247 is 742342316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 613243247 - 2² = 613243243 is a prime.

It is a super-2 number, since 2×613243247² = 752134559982206018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613243243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306621623 + 306621624.

It is an arithmetic number, because the mean of its divisors is an integer number (306621624).

Almost surely, 2^613243247 is an apocalyptic number.

613243247 is a deficient number, since it is larger than the sum of its proper divisors (1).

613243247 is an equidigital number, since it uses as much as digits as its factorization.

613243247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 32.

The square root of 613243247 is about 24763.7486459542. The cubic root of 613243247 is about 849.5929986896.

The spelling of 613243247 in words is "six hundred thirteen million, two hundred forty-three thousand, two hundred forty-seven".