345819 has 8 divisors (see below), whose sum is σ = 485440. Its totient is φ = 218376.

The previous prime is 345817. The next prime is 345823. The reversal of 345819 is 918543.

345819 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 345819 - 2¹ = 345817 is a prime.

It is a super-2 number, since 2×345819² = 239181561522, which contains 22 as substring.

It is a Duffinian number.

345819 is strictly pandigital in base 7.

345819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (345811) 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 7 ways as a sum of consecutive naturals, for example, 2977 + ... + 3090.

It is an arithmetic number, because the mean of its divisors is an integer number (60680).

2³⁴⁵⁸¹⁹ is an apocalyptic number.

345819 is a deficient number, since it is larger than the sum of its proper divisors (139621).

345819 is a wasteful number, since it uses less digits than its factorization.

345819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089.

The product of its digits is 4320, while the sum is 30.

The square root of 345819 is about 588.0637720520. The cubic root of 345819 is about 70.1912457326.

The spelling of 345819 in words is "three hundred forty-five thousand, eight hundred nineteen".