689142011 has 2 divisors, whose sum is σ = 689142012. Its totient is φ = 689142010.

The previous prime is 689141977. The next prime is 689142019. The reversal of 689142011 is 110241986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689142011 - 2¹⁴ = 689125627 is a prime.

It is a super-2 number, since 2×689142011² = 949833422650248242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (689142019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344571005 + 344571006.

It is an arithmetic number, because the mean of its divisors is an integer number (344571006).

Almost surely, 2^689142011 is an apocalyptic number.

689142011 is a deficient number, since it is larger than the sum of its proper divisors (1).

689142011 is an equidigital number, since it uses as much as digits as its factorization.

689142011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 689142011 is about 26251.5144515512. The cubic root of 689142011 is about 883.2891761796.

Adding to 689142011 its reverse (110241986), we get a palindrome (799383997).

The spelling of 689142011 in words is "six hundred eighty-nine million, one hundred forty-two thousand, eleven".