345599 has 2 divisors, whose sum is σ = 345600. Its totient is φ = 345598.

The previous prime is 345581. The next prime is 345601. The reversal of 345599 is 995543.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345599 is a prime.

It is a Sophie Germain prime.

Together with 345601, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3⁷ + 4⁹ + 5⁵ + 5⁷ + 9 + 9 .

It is a plaindrome in base 6, base 10 and base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342599) 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 as a sum of consecutive naturals, namely, 172799 + 172800.

It is an arithmetic number, because the mean of its divisors is an integer number (172800).

2³⁴⁵⁵⁹⁹ is an apocalyptic number.

345599 is a deficient number, since it is larger than the sum of its proper divisors (1).

345599 is an equidigital number, since it uses as much as digits as its factorization.

345599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 35.

The square root of 345599 is about 587.8766877501. The cubic root of 345599 is about 70.1763580314.

The spelling of 345599 in words is "three hundred forty-five thousand, five hundred ninety-nine".