87687686 has 8 divisors (see below), whose sum is σ = 132096744. Its totient is φ = 43655440.

The previous prime is 87687667. The next prime is 87687697. The reversal of 87687686 is 68678678.

87687686 is nontrivially palindromic in base 3.

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, 93620 + ... + 94551.

It is an arithmetic number, because the mean of its divisors is an integer number (16512093).

Almost surely, 2^87687686 is an apocalyptic number.

87687686 is a deficient number, since it is larger than the sum of its proper divisors (44409058).

87687686 is a wasteful number, since it uses less digits than its factorization.

87687686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188406.

The product of its digits is 5419008, while the sum is 56.

The square root of 87687686 is about 9364.1703316418. The cubic root of 87687686 is about 444.2691973294.

The spelling of 87687686 in words is "eighty-seven million, six hundred eighty-seven thousand, six hundred eighty-six".