1346805 has 18 divisors (see below), whose sum is σ = 2348034. Its totient is φ = 714144.

The previous prime is 1346773. The next prime is 1346827. The reversal of 1346805 is 5086431.

It can be written as a sum of positive squares in 3 ways, for example, as 695556 + 651249 = 834^2 + 807^2 .

It is not a de Polignac number, because 1346805 - 2⁵ = 1346773 is a prime.

1346805 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7699 + ... + 7871.

2^1346805 is an apocalyptic number.

1346805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1346805 is a deficient number, since it is larger than the sum of its proper divisors (1001229).

1346805 is an equidigital number, since it uses as much as digits as its factorization.

1346805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1346805 is about 1160.5192803224. The cubic root of 1346805 is about 110.4336873409.

Multiplying 1346805 by its product of nonzero digits (2880), we get a square (3878798400 = 62280²).

The spelling of 1346805 in words is "one million, three hundred forty-six thousand, eight hundred five".