340645937 has 2 divisors, whose sum is σ = 340645938. Its totient is φ = 340645936.

The previous prime is 340645931. The next prime is 340645967. The reversal of 340645937 is 739546043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248409121 + 92236816 = 15761^2 + 9604^2 .

It is an emirp because it is prime and its reverse (739546043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340645937 - 2¹² = 340641841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340645894 and 340645903.

It is not a weakly prime, because it can be changed into another prime (340645931) 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, 170322968 + 170322969.

It is an arithmetic number, because the mean of its divisors is an integer number (170322969).

Almost surely, 2^340645937 is an apocalyptic number.

It is an amenable number.

340645937 is a deficient number, since it is larger than the sum of its proper divisors (1).

340645937 is an equidigital number, since it uses as much as digits as its factorization.

340645937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 41.

The square root of 340645937 is about 18456.5960296042. The cubic root of 340645937 is about 698.3949190045.

The spelling of 340645937 in words is "three hundred forty million, six hundred forty-five thousand, nine hundred thirty-seven".