345705 has 16 divisors (see below), whose sum is σ = 582720. Its totient is φ = 174528.

The previous prime is 345701. The next prime is 345707. The reversal of 345705 is 507543.

It is not a de Polignac number, because 345705 - 2² = 345701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322 + ... + 891.

It is an arithmetic number, because the mean of its divisors is an integer number (36420).

2³⁴⁵⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

345705 is a deficient number, since it is larger than the sum of its proper divisors (237015).

345705 is a wasteful number, since it uses less digits than its factorization.

345705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 345705 is about 587.9668357994. The cubic root of 345705 is about 70.1835319850.

The spelling of 345705 in words is "three hundred forty-five thousand, seven hundred five".