87786616 has 16 divisors (see below), whose sum is σ = 167057640. Its totient is φ = 43237920.

The previous prime is 87786599. The next prime is 87786619. The reversal of 87786616 is 61668778.

It is a self number, because there is not a number n which added to its sum of digits gives 87786616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87786619) 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, 81355 + ... + 82426.

Almost surely, 2^87786616 is an apocalyptic number.

It is an amenable number.

87786616 is a deficient number, since it is larger than the sum of its proper divisors (79271024).

87786616 is a wasteful number, since it uses less digits than its factorization.

87786616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163854 (or 163850 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 87786616 is about 9369.4512112503. The cubic root of 87786616 is about 444.4362106438.

The spelling of 87786616 in words is "eighty-seven million, seven hundred eighty-six thousand, six hundred sixteen".