345769 has 2 divisors, whose sum is σ = 345770. Its totient is φ = 345768.

The previous prime is 345757. The next prime is 345773. The reversal of 345769 is 967543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 345744 + 25 = 588^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345769 is a prime.

It is a super-2 number, since 2×345769² = 239112402722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (345739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172884 + 172885.

It is an arithmetic number, because the mean of its divisors is an integer number (172885).

2³⁴⁵⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

345769 is a deficient number, since it is larger than the sum of its proper divisors (1).

345769 is an equidigital number, since it uses as much as digits as its factorization.

345769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 345769 is about 588.0212581191. The cubic root of 345769 is about 70.1878627188.

Adding to 345769 its product of digits (22680), we get a square (368449 = 607²).

The spelling of 345769 in words is "three hundred forty-five thousand, seven hundred sixty-nine".