87520718 has 16 divisors (see below), whose sum is σ = 133868160. Its totient is φ = 42902136.

The previous prime is 87520711. The next prime is 87520729. The reversal of 87520718 is 81702578.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87520711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56705 + ... + 58227.

It is an arithmetic number, because the mean of its divisors is an integer number (8366760).

Almost surely, 2^87520718 is an apocalyptic number.

87520718 is a deficient number, since it is larger than the sum of its proper divisors (46347442).

87520718 is a wasteful number, since it uses less digits than its factorization.

87520718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 87520718 is about 9355.2508250714. The cubic root of 87520718 is about 443.9870373349.

The spelling of 87520718 in words is "eighty-seven million, five hundred twenty thousand, seven hundred eighteen".