111406687 has 16 divisors (see below), whose sum is σ = 134691840. Its totient is φ = 90078912.

The previous prime is 111406681. The next prime is 111406699. The reversal of 111406687 is 786604111.

It is a de Polignac number, because none of the positive numbers 2^k-111406687 is a prime.

It is a super-2 number, since 2×111406687² = 24822899816631938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111406681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7014 + ... + 16492.

It is an arithmetic number, because the mean of its divisors is an integer number (8418240).

Almost surely, 2^111406687 is an apocalyptic number.

111406687 is a deficient number, since it is larger than the sum of its proper divisors (23285153).

111406687 is an equidigital number, since it uses as much as digits as its factorization.

111406687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9582.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 111406687 is about 10554.9366175264. The cubic root of 111406687 is about 481.1757735187.

The spelling of 111406687 in words is "one hundred eleven million, four hundred six thousand, six hundred eighty-seven".