340442617 has 2 divisors, whose sum is σ = 340442618. Its totient is φ = 340442616.

The previous prime is 340442603. The next prime is 340442689. The reversal of 340442617 is 716244043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325044841 + 15397776 = 18029^2 + 3924^2 .

It is a cyclic number.

It is not a de Polignac number, because 340442617 - 2¹⁹ = 339918329 is a prime.

It is not a weakly prime, because it can be changed into another prime (340442917) 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, 170221308 + 170221309.

It is an arithmetic number, because the mean of its divisors is an integer number (170221309).

Almost surely, 2^340442617 is an apocalyptic number.

It is an amenable number.

340442617 is a deficient number, since it is larger than the sum of its proper divisors (1).

340442617 is an equidigital number, since it uses as much as digits as its factorization.

340442617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 340442617 is about 18451.0871495422. The cubic root of 340442617 is about 698.2559419416.

The spelling of 340442617 in words is "three hundred forty million, four hundred forty-two thousand, six hundred seventeen".