345858 has 16 divisors (see below), whose sum is σ = 704160. Its totient is φ = 113216.

The previous prime is 345853. The next prime is 345869. The reversal of 345858 is 858543.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (345853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135 + ... + 842.

It is an arithmetic number, because the mean of its divisors is an integer number (44010).

2³⁴⁵⁸⁵⁸ is an apocalyptic number.

345858 is an abundant number, since it is smaller than the sum of its proper divisors (358302).

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

345858 is a wasteful number, since it uses less digits than its factorization.

345858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041.

The product of its digits is 19200, while the sum is 33.

The square root of 345858 is about 588.0969307861. The cubic root of 345858 is about 70.1938842571.

The spelling of 345858 in words is "three hundred forty-five thousand, eight hundred fifty-eight".