346405 has 8 divisors (see below), whose sum is σ = 430200. Its totient is φ = 267456.

The previous prime is 346399. The next prime is 346417. The reversal of 346405 is 504643.

It can be written as a sum of positive squares in 4 ways, for example, as 12321 + 334084 = 111^2 + 578^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 346405 - 2³ = 346397 is a prime.

It is a plaindrome in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050 + ... + 1339.

It is an arithmetic number, because the mean of its divisors is an integer number (53775).

2³⁴⁶⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

346405 is a deficient number, since it is larger than the sum of its proper divisors (83795).

346405 is a wasteful number, since it uses less digits than its factorization.

346405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 346405 is about 588.5618064401. The cubic root of 346405 is about 70.2308703713.

The spelling of 346405 in words is "three hundred forty-six thousand, four hundred five".