1698061 has 2 divisors, whose sum is σ = 1698062. Its totient is φ = 1698060.

The previous prime is 1698043. The next prime is 1698071. The reversal of 1698061 is 1608961.

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., 1416100 + 281961 = 1190^2 + 531^2 .

It is a cyclic number.

It is not a de Polignac number, because 1698061 - 2⁵ = 1698029 is a prime.

It is a super-2 number, since 2×1698061² = 5766822319442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1698001) 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, 849030 + 849031.

It is an arithmetic number, because the mean of its divisors is an integer number (849031).

2^1698061 is an apocalyptic number.

It is an amenable number.

1698061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1698061 is an equidigital number, since it uses as much as digits as its factorization.

1698061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1698061 is about 1303.0966963353. The cubic root of 1698061 is about 119.3029261672.

The spelling of 1698061 in words is "one million, six hundred ninety-eight thousand, sixty-one".