111000665 has 8 divisors (see below), whose sum is σ = 133286208. Its totient is φ = 88743600.

The previous prime is 111000611. The next prime is 111000683. The reversal of 111000665 is 566000111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111000665 - 2¹² = 110996569 is a prime.

It is a super-2 number, since 2×111000665² = 24642295260884450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2690 + ... + 15140.

It is an arithmetic number, because the mean of its divisors is an integer number (16660776).

Almost surely, 2^111000665 is an apocalyptic number.

It is an amenable number.

111000665 is a deficient number, since it is larger than the sum of its proper divisors (22285543).

111000665 is a wasteful number, since it uses less digits than its factorization.

111000665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14239.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 111000665 is about 10535.6853123088. The cubic root of 111000665 is about 480.5905131045.

Adding to 111000665 its reverse (566000111), we get a palindrome (677000776).

The spelling of 111000665 in words is "one hundred eleven million, six hundred sixty-five", and thus it is an aban number.