87665716 has 24 divisors (see below), whose sum is σ = 157280256. Its totient is φ = 42735840.

The previous prime is 87665701. The next prime is 87665717. The reversal of 87665716 is 61756678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87665717) 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 7 ways as a sum of consecutive naturals, for example, 58861 + ... + 60331.

It is an arithmetic number, because the mean of its divisors is an integer number (6553344).

Almost surely, 2^87665716 is an apocalyptic number.

It is an amenable number.

87665716 is a deficient number, since it is larger than the sum of its proper divisors (69614540).

87665716 is a wasteful number, since it uses less digits than its factorization.

87665716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839 (or 1837 counting only the distinct ones).

The product of its digits is 423360, while the sum is 46.

The square root of 87665716 is about 9362.9971697101. The cubic root of 87665716 is about 444.2320906006.

The spelling of 87665716 in words is "eighty-seven million, six hundred sixty-five thousand, seven hundred sixteen".