111649065 has 16 divisors (see below), whose sum is σ = 194878656. Its totient is φ = 54132800.

The previous prime is 111649051. The next prime is 111649079. The reversal of 111649065 is 560946111.

It is an interprime number because it is at equal distance from previous prime (111649051) and next prime (111649079).

It is not a de Polignac number, because 111649065 - 2⁴ = 111649049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338166 + ... + 338495.

It is an arithmetic number, because the mean of its divisors is an integer number (12179916).

Almost surely, 2^111649065 is an apocalyptic number.

111649065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111649065 is a deficient number, since it is larger than the sum of its proper divisors (83229591).

111649065 is a wasteful number, since it uses less digits than its factorization.

111649065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676680.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 111649065 is about 10566.4121157562. The cubic root of 111649065 is about 481.5244717546.

The spelling of 111649065 in words is "one hundred eleven million, six hundred forty-nine thousand, sixty-five".