87987686 has 8 divisors (see below), whose sum is σ = 132652080. Its totient is φ = 43770328.

The previous prime is 87987671. The next prime is 87987701. The reversal of 87987686 is 68678978.

It is an interprime number because it is at equal distance from previous prime (87987671) and next prime (87987701).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111266 + ... + 112053.

It is an arithmetic number, because the mean of its divisors is an integer number (16581510).

Almost surely, 2^87987686 is an apocalyptic number.

87987686 is a deficient number, since it is larger than the sum of its proper divisors (44664394).

87987686 is a wasteful number, since it uses less digits than its factorization.

87987686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223518.

The product of its digits is 8128512, while the sum is 59.

The square root of 87987686 is about 9380.1751582793. The cubic root of 87987686 is about 444.7752701076.

The spelling of 87987686 in words is "eighty-seven million, nine hundred eighty-seven thousand, six hundred eighty-six".