111677 has 4 divisors (see below), whose sum is σ = 112476. Its totient is φ = 110880.

The previous prime is 111667. The next prime is 111697. The reversal of 111677 is 776111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2116 + 109561 = 46^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 111677 - 2¹² = 107581 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 (111637) 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, 128 + ... + 489.

It is an arithmetic number, because the mean of its divisors is an integer number (28119).

2¹¹¹⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

111677 is a deficient number, since it is larger than the sum of its proper divisors (799).

111677 is an equidigital number, since it uses as much as digits as its factorization.

111677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798.

The product of its digits is 294, while the sum is 23.

The square root of 111677 is about 334.1810886331. The cubic root of 111677 is about 48.1564628127.

Adding to 111677 its reverse (776111), we get a palindrome (887788).

The spelling of 111677 in words is "one hundred eleven thousand, six hundred seventy-seven".