1690668011 has 2 divisors, whose sum is σ = 1690668012. Its totient is φ = 1690668010.

The previous prime is 1690667989. The next prime is 1690668097. The reversal of 1690668011 is 1108660961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1690668011 - 2⁶ = 1690667947 is a prime.

It is a super-2 number, since 2×1690668011² = 5716716646837392242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1690668211) 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, 845334005 + 845334006.

It is an arithmetic number, because the mean of its divisors is an integer number (845334006).

Almost surely, 2^1690668011 is an apocalyptic number.

1690668011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690668011 is an equidigital number, since it uses as much as digits as its factorization.

1690668011 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 1690668011 is about 41117.7335343280. The cubic root of 1690668011 is about 1191.2953460554.

The spelling of 1690668011 in words is "one billion, six hundred ninety million, six hundred sixty-eight thousand, eleven".