617340443 has 2 divisors, whose sum is σ = 617340444. Its totient is φ = 617340442.

The previous prime is 617340407. The next prime is 617340463. The reversal of 617340443 is 344043716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 617340443 - 2¹² = 617336347 is a prime.

It is a super-2 number, since 2×617340443² = 762218445126872498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (617340463) 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, 308670221 + 308670222.

It is an arithmetic number, because the mean of its divisors is an integer number (308670222).

Almost surely, 2^617340443 is an apocalyptic number.

617340443 is a deficient number, since it is larger than the sum of its proper divisors (1).

617340443 is an equidigital number, since it uses as much as digits as its factorization.

617340443 is an odious number, because the sum of its binary digits is odd.

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

The square root of 617340443 is about 24846.3366112592. The cubic root of 617340443 is about 851.4808984768.

The spelling of 617340443 in words is "six hundred seventeen million, three hundred forty thousand, four hundred forty-three".