111106691 has 2 divisors, whose sum is σ = 111106692. Its totient is φ = 111106690.

The previous prime is 111106687. The next prime is 111106727. The reversal of 111106691 is 196601111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111106691 - 2² = 111106687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111106691.

It is not a weakly prime, because it can be changed into another prime (111106601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55553345 + 55553346.

It is an arithmetic number, because the mean of its divisors is an integer number (55553346).

Almost surely, 2^111106691 is an apocalyptic number.

111106691 is a deficient number, since it is larger than the sum of its proper divisors (1).

111106691 is an equidigital number, since it uses as much as digits as its factorization.

111106691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 111106691 is about 10540.7158675301. The cubic root of 111106691 is about 480.7434817813.

The spelling of 111106691 in words is "one hundred eleven million, one hundred six thousand, six hundred ninety-one".