1998067 has 2 divisors, whose sum is σ = 1998068. Its totient is φ = 1998066.

The previous prime is 1998049. The next prime is 1998077. The reversal of 1998067 is 7608991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1998067 - 2⁷ = 1997939 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (1998077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999033 + 999034.

It is an arithmetic number, because the mean of its divisors is an integer number (999034).

2^1998067 is an apocalyptic number.

1998067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1998067 is an equidigital number, since it uses as much as digits as its factorization.

1998067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1998067 is about 1413.5299784582. The cubic root of 1998067 is about 125.9515014491.

The spelling of 1998067 in words is "one million, nine hundred ninety-eight thousand, sixty-seven".