613404343 has 2 divisors, whose sum is σ = 613404344. Its totient is φ = 613404342.

The previous prime is 613404313. The next prime is 613404361. The reversal of 613404343 is 343404316.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613404343 is a prime.

It is a super-2 number, since 2×613404343² = 752529776022523298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613404313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306702171 + 306702172.

It is an arithmetic number, because the mean of its divisors is an integer number (306702172).

Almost surely, 2^613404343 is an apocalyptic number.

613404343 is a deficient number, since it is larger than the sum of its proper divisors (1).

613404343 is an equidigital number, since it uses as much as digits as its factorization.

613404343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 613404343 is about 24767.0010901603. The cubic root of 613404343 is about 849.6673868173.

Adding to 613404343 its reverse (343404316), we get a palindrome (956808659).

The spelling of 613404343 in words is "six hundred thirteen million, four hundred four thousand, three hundred forty-three".