87708487 has 4 divisors (see below), whose sum is σ = 88095096. Its totient is φ = 87321880.

The previous prime is 87708479. The next prime is 87708493. The reversal of 87708487 is 78480778.

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 87708487 - 2³ = 87708479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87708487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87708497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192964 + ... + 193417.

It is an arithmetic number, because the mean of its divisors is an integer number (22023774).

Almost surely, 2^87708487 is an apocalyptic number.

87708487 is a deficient number, since it is larger than the sum of its proper divisors (386609).

87708487 is a wasteful number, since it uses less digits than its factorization.

87708487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386608.

The product of its (nonzero) digits is 702464, while the sum is 49.

The square root of 87708487 is about 9365.2809354552. The cubic root of 87708487 is about 444.3043239375.

The spelling of 87708487 in words is "eighty-seven million, seven hundred eight thousand, four hundred eighty-seven".