87561118 has 8 divisors (see below), whose sum is σ = 139067712. Its totient is φ = 41205216.

The previous prime is 87561113. The next prime is 87561119. The reversal of 87561118 is 81116578.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87561113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287630 + ... + 1287697.

It is an arithmetic number, because the mean of its divisors is an integer number (17383464).

Almost surely, 2^87561118 is an apocalyptic number.

87561118 is a deficient number, since it is larger than the sum of its proper divisors (51506594).

87561118 is a wasteful number, since it uses less digits than its factorization.

87561118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575346.

The product of its digits is 13440, while the sum is 37.

The square root of 87561118 is about 9357.4097911762. The cubic root of 87561118 is about 444.0553423698.

The spelling of 87561118 in words is "eighty-seven million, five hundred sixty-one thousand, one hundred eighteen".