111668929 has 2 divisors, whose sum is σ = 111668930. Its totient is φ = 111668928.

The previous prime is 111668927. The next prime is 111668951. The reversal of 111668929 is 929866111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106502400 + 5166529 = 10320^2 + 2273^2 .

It is a cyclic number.

It is not a de Polignac number, because 111668929 - 2¹ = 111668927 is a prime.

Together with 111668927, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111668927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55834464 + 55834465.

It is an arithmetic number, because the mean of its divisors is an integer number (55834465).

Almost surely, 2^111668929 is an apocalyptic number.

It is an amenable number.

111668929 is a deficient number, since it is larger than the sum of its proper divisors (1).

111668929 is an equidigital number, since it uses as much as digits as its factorization.

111668929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 43.

The square root of 111668929 is about 10567.3520335039. The cubic root of 111668929 is about 481.5530268076.

The spelling of 111668929 in words is "one hundred eleven million, six hundred sixty-eight thousand, nine hundred twenty-nine".