340681447 has 2 divisors, whose sum is σ = 340681448. Its totient is φ = 340681446.

The previous prime is 340681421. The next prime is 340681463. The reversal of 340681447 is 744186043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340681447 - 2¹¹ = 340679399 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340681487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170340723 + 170340724.

It is an arithmetic number, because the mean of its divisors is an integer number (170340724).

Almost surely, 2^340681447 is an apocalyptic number.

340681447 is a deficient number, since it is larger than the sum of its proper divisors (1).

340681447 is an equidigital number, since it uses as much as digits as its factorization.

340681447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 340681447 is about 18457.5579912403. The cubic root of 340681447 is about 698.4191857863.

The spelling of 340681447 in words is "three hundred forty million, six hundred eighty-one thousand, four hundred forty-seven".