340728763 has 2 divisors, whose sum is σ = 340728764. Its totient is φ = 340728762.

The previous prime is 340728749. The next prime is 340728809. The reversal of 340728763 is 367827043.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (367827043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340728763 - 2⁹ = 340728251 is a prime.

It is not a weakly prime, because it can be changed into another prime (340720763) 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, 170364381 + 170364382.

It is an arithmetic number, because the mean of its divisors is an integer number (170364382).

Almost surely, 2^340728763 is an apocalyptic number.

340728763 is a deficient number, since it is larger than the sum of its proper divisors (1).

340728763 is an equidigital number, since it uses as much as digits as its factorization.

340728763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 340728763 is about 18458.8396980959. The cubic root of 340728763 is about 698.4515179182.

The spelling of 340728763 in words is "three hundred forty million, seven hundred twenty-eight thousand, seven hundred sixty-three".