109286687 has 4 divisors (see below), whose sum is σ = 112812096. Its totient is φ = 105761280.

The previous prime is 109286677. The next prime is 109286717. The reversal of 109286687 is 786682901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109286687 - 2²⁰ = 108238111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109286627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762658 + ... + 1762719.

It is an arithmetic number, because the mean of its divisors is an integer number (28203024).

Almost surely, 2^109286687 is an apocalyptic number.

109286687 is a deficient number, since it is larger than the sum of its proper divisors (3525409).

109286687 is an equidigital number, since it uses as much as digits as its factorization.

109286687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525408.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 109286687 is about 10454.0273100849. The cubic root of 109286687 is about 478.1040473652.

The spelling of 109286687 in words is "one hundred nine million, two hundred eighty-six thousand, six hundred eighty-seven".