1688070011 has 2 divisors, whose sum is σ = 1688070012. Its totient is φ = 1688070010.

The previous prime is 1688069993. The next prime is 1688070047. The reversal of 1688070011 is 1100708861.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1688070011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1688070011.

It is not a weakly prime, because it can be changed into another prime (1688070611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844035005 + 844035006.

It is an arithmetic number, because the mean of its divisors is an integer number (844035006).

Almost surely, 2^1688070011 is an apocalyptic number.

1688070011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1688070011 is an equidigital number, since it uses as much as digits as its factorization.

1688070011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 1688070011 is about 41086.1291800530. The cubic root of 1688070011 is about 1190.6848236725.

Adding to 1688070011 its reverse (1100708861), we get a palindrome (2788778872).

The spelling of 1688070011 in words is "one billion, six hundred eighty-eight million, seventy thousand, eleven".