111720769 has 2 divisors, whose sum is σ = 111720770. Its totient is φ = 111720768.

The previous prime is 111720761. The next prime is 111720781. The reversal of 111720769 is 967027111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108160000 + 3560769 = 10400^2 + 1887^2 .

It is a cyclic number.

It is not a de Polignac number, because 111720769 - 2³ = 111720761 is a prime.

It is a super-3 number, since 3×111720769³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (111720761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55860384 + 55860385.

It is an arithmetic number, because the mean of its divisors is an integer number (55860385).

Almost surely, 2^111720769 is an apocalyptic number.

It is an amenable number.

111720769 is a deficient number, since it is larger than the sum of its proper divisors (1).

111720769 is an equidigital number, since it uses as much as digits as its factorization.

111720769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 34.

The square root of 111720769 is about 10569.8045866515. The cubic root of 111720769 is about 481.6275323039.

The spelling of 111720769 in words is "one hundred eleven million, seven hundred twenty thousand, seven hundred sixty-nine".