87987667 has 8 divisors (see below), whose sum is σ = 88864256. Its totient is φ = 87115392.

The previous prime is 87987637. The next prime is 87987671. The reversal of 87987667 is 76678978.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87987667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87987617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52078 + ... + 53740.

It is an arithmetic number, because the mean of its divisors is an integer number (11108032).

Almost surely, 2^87987667 is an apocalyptic number.

87987667 is a deficient number, since it is larger than the sum of its proper divisors (876589).

87987667 is a wasteful number, since it uses less digits than its factorization.

87987667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157.

The product of its digits is 7112448, while the sum is 58.

The square root of 87987667 is about 9380.1741455050. The cubic root of 87987667 is about 444.7752380927.

The spelling of 87987667 in words is "eighty-seven million, nine hundred eighty-seven thousand, six hundred sixty-seven".