111666077 has 2 divisors, whose sum is σ = 111666078. Its totient is φ = 111666076.

The previous prime is 111666073. The next prime is 111666089. The reversal of 111666077 is 770666111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93296281 + 18369796 = 9659^2 + 4286^2 .

It is an emirp because it is prime and its reverse (770666111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111666077 - 2² = 111666073 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111666073) 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, 55833038 + 55833039.

It is an arithmetic number, because the mean of its divisors is an integer number (55833039).

Almost surely, 2^111666077 is an apocalyptic number.

It is an amenable number.

111666077 is a deficient number, since it is larger than the sum of its proper divisors (1).

111666077 is an equidigital number, since it uses as much as digits as its factorization.

111666077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 111666077 is about 10567.2170887136. The cubic root of 111666077 is about 481.5489271864.

The spelling of 111666077 in words is "one hundred eleven million, six hundred sixty-six thousand, seventy-seven".