345817 has 2 divisors, whose sum is σ = 345818. Its totient is φ = 345816.

The previous prime is 345811. The next prime is 345823. The reversal of 345817 is 718543.

It is a balanced prime because it is at equal distance from previous prime (345811) and next prime (345823).

It can be written as a sum of positive squares in only one way, i.e., 341056 + 4761 = 584^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 345817 - 2⁷ = 345689 is a prime.

It is not a weakly prime, because it can be changed into another prime (345811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172908 + 172909.

It is an arithmetic number, because the mean of its divisors is an integer number (172909).

2³⁴⁵⁸¹⁷ is an apocalyptic number.

It is an amenable number.

345817 is a deficient number, since it is larger than the sum of its proper divisors (1).

345817 is an equidigital number, since it uses as much as digits as its factorization.

345817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 345817 is about 588.0620715537. The cubic root of 345817 is about 70.1911104183.

The spelling of 345817 in words is "three hundred forty-five thousand, eight hundred seventeen".