111009685 has 8 divisors (see below), whose sum is σ = 140222880. Its totient is φ = 84133584.

The previous prime is 111009641. The next prime is 111009727. The reversal of 111009685 is 586900111.

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

It is a cyclic number.

It is not a de Polignac number, because 111009685 - 2¹³ = 111001493 is a prime.

It is a super-4 number, since 4×111009685⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent 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, 584167 + ... + 584356.

It is an arithmetic number, because the mean of its divisors is an integer number (17527860).

Almost surely, 2^111009685 is an apocalyptic number.

It is an amenable number.

111009685 is a deficient number, since it is larger than the sum of its proper divisors (29213195).

111009685 is a wasteful number, since it uses less digits than its factorization.

111009685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168547.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 111009685 is about 10536.1133725867. The cubic root of 111009685 is about 480.6035304710.

Adding to 111009685 its reverse (586900111), we get a palindrome (697909796).

The spelling of 111009685 in words is "one hundred eleven million, nine thousand, six hundred eighty-five".