87688507 has 4 divisors (see below), whose sum is σ = 87745896. Its totient is φ = 87631120.

The previous prime is 87688487. The next prime is 87688541. The reversal of 87688507 is 70588678.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87688507 - 2¹⁵ = 87655739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87688577) 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, 26338 + ... + 29479.

It is an arithmetic number, because the mean of its divisors is an integer number (21936474).

Almost surely, 2^87688507 is an apocalyptic number.

87688507 is a deficient number, since it is larger than the sum of its proper divisors (57389).

87688507 is a wasteful number, since it uses less digits than its factorization.

87688507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57388.

The product of its (nonzero) digits is 752640, while the sum is 49.

The square root of 87688507 is about 9364.2141688451. The cubic root of 87688507 is about 444.2705838558.

The spelling of 87688507 in words is "eighty-seven million, six hundred eighty-eight thousand, five hundred seven".