340081765 has 4 divisors (see below), whose sum is σ = 408098124. Its totient is φ = 272065408.

The previous prime is 340081759. The next prime is 340081783. The reversal of 340081765 is 567180043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 567180043 = 11399 ⋅49757.

It can be written as a sum of positive squares in 2 ways, for example, as 161137636 + 178944129 = 12694^2 + 13377^2 .

It is a cyclic number.

It is not a de Polignac number, because 340081765 - 2¹⁷ = 339950693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340081765.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 34008172 + ... + 34008181.

It is an arithmetic number, because the mean of its divisors is an integer number (102024531).

Almost surely, 2^340081765 is an apocalyptic number.

It is an amenable number.

340081765 is a deficient number, since it is larger than the sum of its proper divisors (68016359).

340081765 is an equidigital number, since it uses as much as digits as its factorization.

340081765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68016358.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 340081765 is about 18441.3059461634. The cubic root of 340081765 is about 698.0091493671.

The spelling of 340081765 in words is "three hundred forty million, eighty-one thousand, seven hundred sixty-five".