1798697 has 2 divisors, whose sum is σ = 1798698. Its totient is φ = 1798696.

The previous prime is 1798679. The next prime is 1798703. The reversal of 1798697 is 7968971.

Together with previous prime (1798679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1792921 + 5776 = 1339^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 1798697 - 2⁶ = 1798633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1798637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899348 + 899349.

It is an arithmetic number, because the mean of its divisors is an integer number (899349).

2^1798697 is an apocalyptic number.

It is an amenable number.

1798697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798697 is an equidigital number, since it uses as much as digits as its factorization.

1798697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 47.

The square root of 1798697 is about 1341.1550991589. The cubic root of 1798697 is about 121.6146805697.

The spelling of 1798697 in words is "one million, seven hundred ninety-eight thousand, six hundred ninety-seven".