1668833 has 2 divisors, whose sum is σ = 1668834. Its totient is φ = 1668832.

The previous prime is 1668803. The next prime is 1668847. The reversal of 1668833 is 3388661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1607824 + 61009 = 1268^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 1668833 - 2¹⁶ = 1603297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1668793 and 1668802.

It is not a weakly prime, because it can be changed into another prime (1668803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834416 + 834417.

It is an arithmetic number, because the mean of its divisors is an integer number (834417).

2^1668833 is an apocalyptic number.

It is an amenable number.

1668833 is a deficient number, since it is larger than the sum of its proper divisors (1).

1668833 is an equidigital number, since it uses as much as digits as its factorization.

1668833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 1668833 is about 1291.8331935664. The cubic root of 1668833 is about 118.6144573526.

The spelling of 1668833 in words is "one million, six hundred sixty-eight thousand, eight hundred thirty-three".