345765789 has 6 divisors (see below), whose sum is σ = 499439486. Its totient is φ = 230510520.

The previous prime is 345765787. The next prime is 345765809. The reversal of 345765789 is 987567543.

It can be written as a sum of positive squares in only one way, i.e., 215120889 + 130644900 = 14667^2 + 11430^2 .

It is not a de Polignac number, because 345765789 - 2¹ = 345765787 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345765787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19209202 + ... + 19209219.

Almost surely, 2^345765789 is an apocalyptic number.

It is an amenable number.

345765789 is a deficient number, since it is larger than the sum of its proper divisors (153673697).

345765789 is a wasteful number, since it uses less digits than its factorization.

345765789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38418427 (or 38418424 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The square root of 345765789 is about 18594.7785413002. The cubic root of 345765789 is about 701.8764545045.

The spelling of 345765789 in words is "three hundred forty-five million, seven hundred sixty-five thousand, seven hundred eighty-nine".