111668969 has 2 divisors, whose sum is σ = 111668970. Its totient is φ = 111668968.

The previous prime is 111668951. The next prime is 111668981. The reversal of 111668969 is 969866111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101505625 + 10163344 = 10075^2 + 3188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111668969 is a prime.

It is a super-2 number, since 2×111668969² = 24939917275045922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111668929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55834484 + 55834485.

It is an arithmetic number, because the mean of its divisors is an integer number (55834485).

Almost surely, 2^111668969 is an apocalyptic number.

It is an amenable number.

111668969 is a deficient number, since it is larger than the sum of its proper divisors (1).

111668969 is an equidigital number, since it uses as much as digits as its factorization.

111668969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 47.

The square root of 111668969 is about 10567.3539261255. The cubic root of 111668969 is about 481.5530843053.

The spelling of 111668969 in words is "one hundred eleven million, six hundred sixty-eight thousand, nine hundred sixty-nine".