340545689 has 4 divisors (see below), whose sum is σ = 371504400. Its totient is φ = 309586980.

The previous prime is 340545679. The next prime is 340545701. The reversal of 340545689 is 986545043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340545689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340545629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15479339 + ... + 15479360.

It is an arithmetic number, because the mean of its divisors is an integer number (92876100).

Almost surely, 2^340545689 is an apocalyptic number.

It is an amenable number.

340545689 is a deficient number, since it is larger than the sum of its proper divisors (30958711).

340545689 is a wasteful number, since it uses less digits than its factorization.

340545689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30958710.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 340545689 is about 18453.8800527152. The cubic root of 340545689 is about 698.3264025428.

It can be divided in two parts, 3405 and 45689, that added together give a palindrome (49094).

The spelling of 340545689 in words is "three hundred forty million, five hundred forty-five thousand, six hundred eighty-nine".