340815689 has 8 divisors (see below), whose sum is σ = 342376320. Its totient is φ = 339259536.

The previous prime is 340815649. The next prime is 340815697. The reversal of 340815689 is 986518043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340815689 - 2¹⁶ = 340750153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340815619) 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 in 7 ways as a sum of consecutive naturals, for example, 304559 + ... + 305675.

It is an arithmetic number, because the mean of its divisors is an integer number (42797040).

Almost surely, 2^340815689 is an apocalyptic number.

It is an amenable number.

340815689 is a deficient number, since it is larger than the sum of its proper divisors (1560631).

340815689 is a wasteful number, since it uses less digits than its factorization.

340815689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 340815689 is about 18461.1941379749. The cubic root of 340815689 is about 698.5109086917.

The spelling of 340815689 in words is "three hundred forty million, eight hundred fifteen thousand, six hundred eighty-nine".