111628687 has 2 divisors, whose sum is σ = 111628688. Its totient is φ = 111628686.

The previous prime is 111628663. The next prime is 111628709. The reversal of 111628687 is 786826111.

It is a strong prime.

It is an emirp because it is prime and its reverse (786826111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111628687 - 2¹⁵ = 111595919 is a prime.

It is a super-2 number, since 2×111628687² = 24921927522687938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111128687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55814343 + 55814344.

It is an arithmetic number, because the mean of its divisors is an integer number (55814344).

Almost surely, 2^111628687 is an apocalyptic number.

111628687 is a deficient number, since it is larger than the sum of its proper divisors (1).

111628687 is an equidigital number, since it uses as much as digits as its factorization.

111628687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 40.

The square root of 111628687 is about 10565.4477898478. The cubic root of 111628687 is about 481.4951742925.

The spelling of 111628687 in words is "one hundred eleven million, six hundred twenty-eight thousand, six hundred eighty-seven".