111666677 has 2 divisors, whose sum is σ = 111666678. Its totient is φ = 111666676.

The previous prime is 111666649. The next prime is 111666697. The reversal of 111666677 is 776666111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97634161 + 14032516 = 9881^2 + 3746^2 .

It is a cyclic number.

It is not a de Polignac number, because 111666677 - 2⁶ = 111666613 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111666697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55833338 + 55833339.

It is an arithmetic number, because the mean of its divisors is an integer number (55833339).

Almost surely, 2^111666677 is an apocalyptic number.

It is an amenable number.

111666677 is a deficient number, since it is larger than the sum of its proper divisors (1).

111666677 is an equidigital number, since it uses as much as digits as its factorization.

111666677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 111666677 is about 10567.2454783638. The cubic root of 111666677 is about 481.5497896651.

The spelling of 111666677 in words is "one hundred eleven million, six hundred sixty-six thousand, six hundred seventy-seven".