1668883 has 2 divisors, whose sum is σ = 1668884. Its totient is φ = 1668882.

The previous prime is 1668869. The next prime is 1668889. The reversal of 1668883 is 3888661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1668883 - 2¹³ = 1660691 is a prime.

1668883 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1668889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834441 + 834442.

It is an arithmetic number, because the mean of its divisors is an integer number (834442).

2^1668883 is an apocalyptic number.

1668883 is a deficient number, since it is larger than the sum of its proper divisors (1).

1668883 is an equidigital number, since it uses as much as digits as its factorization.

1668883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 40.

The square root of 1668883 is about 1291.8525457652. The cubic root of 1668883 is about 118.6156419456.

The spelling of 1668883 in words is "one million, six hundred sixty-eight thousand, eight hundred eighty-three".