340290677 has 2 divisors, whose sum is σ = 340290678. Its totient is φ = 340290676.

The previous prime is 340290673. The next prime is 340290721. The reversal of 340290677 is 776092043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312264241 + 28026436 = 17671^2 + 5294^2 .

It is an emirp because it is prime and its reverse (776092043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340290677 - 2² = 340290673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340290677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340290673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170145338 + 170145339.

It is an arithmetic number, because the mean of its divisors is an integer number (170145339).

Almost surely, 2^340290677 is an apocalyptic number.

It is an amenable number.

340290677 is a deficient number, since it is larger than the sum of its proper divisors (1).

340290677 is an equidigital number, since it uses as much as digits as its factorization.

340290677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 340290677 is about 18446.9693174787. The cubic root of 340290677 is about 698.1520489607.

The spelling of 340290677 in words is "three hundred forty million, two hundred ninety thousand, six hundred seventy-seven".