345818 has 12 divisors (see below), whose sum is σ = 570570. Its totient is φ = 157080.

The previous prime is 345817. The next prime is 345823. The reversal of 345818 is 818543.

345818 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 339889 + 5929 = 583^2 + 77^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 473 + ... + 956.

2³⁴⁵⁸¹⁸ is an apocalyptic number.

345818 is a deficient number, since it is larger than the sum of its proper divisors (224752).

345818 is a wasteful number, since it uses less digits than its factorization.

345818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453 (or 1442 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 345818 is about 588.0629218034. The cubic root of 345818 is about 70.1911780756.

The spelling of 345818 in words is "three hundred forty-five thousand, eight hundred eighteen".