111345669 has 6 divisors (see below), whose sum is σ = 160832646. Its totient is φ = 74230440.

The previous prime is 111345649. The next prime is 111345673. The reversal of 111345669 is 966543111.

It can be written as a sum of positive squares in only one way, i.e., 105884100 + 5461569 = 10290^2 + 2337^2 .

It is a de Polignac number, because none of the positive numbers 2^k-111345669 is a prime.

It is a super-2 number, since 2×111345669² = 24795716010115122, which contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111345649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6185862 + ... + 6185879.

It is an arithmetic number, because the mean of its divisors is an integer number (26805441).

Almost surely, 2^111345669 is an apocalyptic number.

It is an amenable number.

111345669 is a deficient number, since it is larger than the sum of its proper divisors (49486977).

111345669 is a wasteful number, since it uses less digits than its factorization.

111345669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12371747 (or 12371744 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 111345669 is about 10552.0457258297. The cubic root of 111345669 is about 481.0879100159.

The spelling of 111345669 in words is "one hundred eleven million, three hundred forty-five thousand, six hundred sixty-nine".