87786116 has 12 divisors (see below), whose sum is σ = 167591760. Its totient is φ = 39902760.

The previous prime is 87786109. The next prime is 87786119. The reversal of 87786116 is 61168778.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 1995139 = 87786116 / (8 + 7 + 7 + 8 + 6 + 1 + 1 + 6).

It is not an unprimeable number, because it can be changed into a prime (87786119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997526 + ... + 997613.

It is an arithmetic number, because the mean of its divisors is an integer number (13965980).

Almost surely, 2^87786116 is an apocalyptic number.

It is an amenable number.

87786116 is a deficient number, since it is larger than the sum of its proper divisors (79805644).

87786116 is a wasteful number, since it uses less digits than its factorization.

87786116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995154 (or 1995152 counting only the distinct ones).

The product of its digits is 112896, while the sum is 44.

The square root of 87786116 is about 9369.4245287531. The cubic root of 87786116 is about 444.4353668609.

The spelling of 87786116 in words is "eighty-seven million, seven hundred eighty-six thousand, one hundred sixteen".