87109113 has 48 divisors (see below), whose sum is σ = 147598080. Its totient is φ = 45287424.

The previous prime is 87109111. The next prime is 87109117. The reversal of 87109113 is 31190178.

It is not a de Polignac number, because 87109113 - 2¹ = 87109111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87109111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150681 + ... + 151257.

It is an arithmetic number, because the mean of its divisors is an integer number (3074960).

Almost surely, 2^87109113 is an apocalyptic number.

It is an amenable number.

87109113 is a deficient number, since it is larger than the sum of its proper divisors (60488967).

87109113 is a wasteful number, since it uses less digits than its factorization.

87109113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 87109113 is about 9333.2262910528. The cubic root of 87109113 is about 443.2899280373.

The spelling of 87109113 in words is "eighty-seven million, one hundred nine thousand, one hundred thirteen".