349705 has 4 divisors (see below), whose sum is σ = 419652. Its totient is φ = 279760.

The previous prime is 349697. The next prime is 349709. The reversal of 349705 is 507943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507943 = 17 ⋅29879.

It can be written as a sum of positive squares in 2 ways, for example, as 76176 + 273529 = 276^2 + 523^2 .

It is not a de Polignac number, because 349705 - 2³ = 349697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349709) 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, 34966 + ... + 34975.

It is an arithmetic number, because the mean of its divisors is an integer number (104913).

2³⁴⁹⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

349705 is a deficient number, since it is larger than the sum of its proper divisors (69947).

349705 is an equidigital number, since it uses as much as digits as its factorization.

349705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69946.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 349705 is about 591.3586052473. The cubic root of 349705 is about 70.4531822017.

The spelling of 349705 in words is "three hundred forty-nine thousand, seven hundred five".