668088011 has 2 divisors, whose sum is σ = 668088012. Its totient is φ = 668088010.

The previous prime is 668088007. The next prime is 668088017. The reversal of 668088011 is 110880866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 668088011 - 2² = 668088007 is a prime.

It is a super-2 number, since 2×668088011² = 892683180883872242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (668088017) 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, 334044005 + 334044006.

It is an arithmetic number, because the mean of its divisors is an integer number (334044006).

Almost surely, 2^668088011 is an apocalyptic number.

668088011 is a deficient number, since it is larger than the sum of its proper divisors (1).

668088011 is an equidigital number, since it uses as much as digits as its factorization.

668088011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 668088011 is about 25847.3985344754. The cubic root of 668088011 is about 874.2008533737.

The spelling of 668088011 in words is "six hundred sixty-eight million, eighty-eight thousand, eleven".