345804 has 12 divisors (see below), whose sum is σ = 806904. Its totient is φ = 115264.

The previous prime is 345803. The next prime is 345811. The reversal of 345804 is 408543.

345804 = 192² + 193² + ... + 200².

It is a happy number.

345804 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (345803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14397 + ... + 14420.

It is an arithmetic number, because the mean of its divisors is an integer number (67242).

2³⁴⁵⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

345804 is an abundant number, since it is smaller than the sum of its proper divisors (461100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345804 is a wasteful number, since it uses less digits than its factorization.

345804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28824 (or 28822 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 345804 is about 588.0510181949. The cubic root of 345804 is about 70.1902308627.

The spelling of 345804 in words is "three hundred forty-five thousand, eight hundred four".