111677889 has 4 divisors (see below), whose sum is σ = 148903856. Its totient is φ = 74451924.

The previous prime is 111677849. The next prime is 111677899. The reversal of 111677889 is 988776111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 988776111 = 3 ⋅329592037.

It is not a de Polignac number, because 111677889 - 2⁸ = 111677633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111677849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18612979 + ... + 18612984.

It is an arithmetic number, because the mean of its divisors is an integer number (37225964).

Almost surely, 2^111677889 is an apocalyptic number.

It is an amenable number.

111677889 is a deficient number, since it is larger than the sum of its proper divisors (37225967).

111677889 is an equidigital number, since it uses as much as digits as its factorization.

111677889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37225966.

The product of its digits is 169344, while the sum is 48.

The square root of 111677889 is about 10567.7759722659. The cubic root of 111677889 is about 481.5659059488.

The spelling of 111677889 in words is "one hundred eleven million, six hundred seventy-seven thousand, eight hundred eighty-nine".