1783361 has 2 divisors, whose sum is σ = 1783362. Its totient is φ = 1783360.

The previous prime is 1783333. The next prime is 1783373. The reversal of 1783361 is 1633871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050625 + 732736 = 1025^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 1783361 - 2¹⁸ = 1521217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1783391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 891680 + 891681.

It is an arithmetic number, because the mean of its divisors is an integer number (891681).

2^1783361 is an apocalyptic number.

It is an amenable number.

1783361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1783361 is an equidigital number, since it uses as much as digits as its factorization.

1783361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 1783361 is about 1335.4254003875. The cubic root of 1783361 is about 121.2680576783.

The spelling of 1783361 in words is "one million, seven hundred eighty-three thousand, three hundred sixty-one".