87563686 has 24 divisors (see below), whose sum is σ = 153136656. Its totient is φ = 37442160.

The previous prime is 87563683. The next prime is 87563711. The reversal of 87563686 is 68636578.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87563683) 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 11 ways as a sum of consecutive naturals, for example, 62716 + ... + 64096.

It is an arithmetic number, because the mean of its divisors is an integer number (6380694).

Almost surely, 2^87563686 is an apocalyptic number.

87563686 is a deficient number, since it is larger than the sum of its proper divisors (65572970).

87563686 is a wasteful number, since it uses less digits than its factorization.

87563686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044 (or 2037 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 87563686 is about 9357.5470076297. The cubic root of 87563686 is about 444.0596834251.

The spelling of 87563686 in words is "eighty-seven million, five hundred sixty-three thousand, six hundred eighty-six".