111345679 has 16 divisors (see below), whose sum is σ = 117421056. Its totient is φ = 105487200.

The previous prime is 111345673. The next prime is 111345683. The reversal of 111345679 is 976543111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111345679 - 2¹⁹ = 110821391 is a prime.

It is a Duffinian number.

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 (111345673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203284 + ... + 203830.

It is an arithmetic number, because the mean of its divisors is an integer number (7338816).

Almost surely, 2^111345679 is an apocalyptic number.

111345679 is the 6674-th heptagonal number.

111345679 is a deficient number, since it is larger than the sum of its proper divisors (6075377).

111345679 is an equidigital number, since it uses as much as digits as its factorization.

111345679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726.

The product of its digits is 22680, while the sum is 37.

The square root of 111345679 is about 10552.0461996714. The cubic root of 111345679 is about 481.0879244181.

The spelling of 111345679 in words is "one hundred eleven million, three hundred forty-five thousand, six hundred seventy-nine".