166698011 has 2 divisors, whose sum is σ = 166698012. Its totient is φ = 166698010.

The previous prime is 166697969. The next prime is 166698023. The reversal of 166698011 is 110896661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166698011 - 2¹⁰ = 166696987 is a prime.

It is a super-2 number, since 2×166698011² = 55576453742712242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166698911) 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, 83349005 + 83349006.

It is an arithmetic number, because the mean of its divisors is an integer number (83349006).

Almost surely, 2^166698011 is an apocalyptic number.

166698011 is a deficient number, since it is larger than the sum of its proper divisors (1).

166698011 is an equidigital number, since it uses as much as digits as its factorization.

166698011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 166698011 is about 12911.1583910972. The cubic root of 166698011 is about 550.3557048894.

The spelling of 166698011 in words is "one hundred sixty-six million, six hundred ninety-eight thousand, eleven".