109687005 has 12 divisors (see below), whose sum is σ = 190124220. Its totient is φ = 58499712.

The previous prime is 109687003. The next prime is 109687007. The reversal of 109687005 is 500786901.

It is an interprime number because it is at equal distance from previous prime (109687003) and next prime (109687007).

It can be written as a sum of positive squares in 2 ways, for example, as 59305401 + 50381604 = 7701^2 + 7098^2 .

It is not a de Polignac number, because 109687005 - 2¹ = 109687003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109687003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1218700 + ... + 1218789.

It is an arithmetic number, because the mean of its divisors is an integer number (15843685).

Almost surely, 2^109687005 is an apocalyptic number.

109687005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109687005 is a deficient number, since it is larger than the sum of its proper divisors (80437215).

109687005 is a wasteful number, since it uses less digits than its factorization.

109687005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437500 (or 2437497 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 109687005 is about 10473.1564010092. The cubic root of 109687005 is about 478.6871023360.

The spelling of 109687005 in words is "one hundred nine million, six hundred eighty-seven thousand, five".