345885 has 8 divisors (see below), whose sum is σ = 553440. Its totient is φ = 184464.

The previous prime is 345881. The next prime is 345887. The reversal of 345885 is 588543.

345885 = T₂₅₈ + T₂₅₉ + ... + T₂₆₇.

It is a happy number.

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

It is not a de Polignac number, because 345885 - 2² = 345881 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 345885.

It is not an unprimeable number, because it can be changed into a prime (345881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11515 + ... + 11544.

It is an arithmetic number, because the mean of its divisors is an integer number (69180).

2³⁴⁵⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

345885 is a deficient number, since it is larger than the sum of its proper divisors (207555).

345885 is a wasteful number, since it uses less digits than its factorization.

345885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23067.

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

The square root of 345885 is about 588.1198857376. The cubic root of 345885 is about 70.1957108117.

Adding to 345885 its product of digits (19200), we get a triangular number (365085 = T₈₅₄).

The spelling of 345885 in words is "three hundred forty-five thousand, eight hundred eighty-five".