1346405 has 4 divisors (see below), whose sum is σ = 1615692. Its totient is φ = 1077120.

The previous prime is 1346377. The next prime is 1346419. The reversal of 1346405 is 5046431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5046431 = 13 ⋅388187.

It can be written as a sum of positive squares in 2 ways, for example, as 954529 + 391876 = 977^2 + 626^2 .

It is not a de Polignac number, because 1346405 - 2⁶ = 1346341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134636 + ... + 134645.

It is an arithmetic number, because the mean of its divisors is an integer number (403923).

2^1346405 is an apocalyptic number.

It is an amenable number.

1346405 is a deficient number, since it is larger than the sum of its proper divisors (269287).

1346405 is an equidigital number, since it uses as much as digits as its factorization.

1346405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269286.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1346405 is about 1160.3469308789. The cubic root of 1346405 is about 110.4227533530.

The spelling of 1346405 in words is "one million, three hundred forty-six thousand, four hundred five".