1806337 has 8 divisors (see below), whose sum is σ = 1993320. Its totient is φ = 1626240.

The previous prime is 1806331. The next prime is 1806341. The reversal of 1806337 is 7336081.

It is a Cunningham number, because it is equal to 1344²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 87616 + 1718721 = 296^2 + 1311^2 .

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 1806337 - 2⁷ = 1806209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162 + ... + 2227.

It is an arithmetic number, because the mean of its divisors is an integer number (249165).

It is a Proth number, since it is equal to 441 ⋅ 2¹² + 1 and 441 < 2¹².

2^1806337 is an apocalyptic number.

It is an amenable number.

1806337 is a deficient number, since it is larger than the sum of its proper divisors (186983).

1806337 is a wasteful number, since it uses less digits than its factorization.

1806337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1806337 is about 1344.0003720238. Note that the first 3 decimals coincide. The cubic root of 1806337 is about 121.7866242503.

The spelling of 1806337 in words is "one million, eight hundred six thousand, three hundred thirty-seven".