87994587 has 4 divisors (see below), whose sum is σ = 117326120. Its totient is φ = 58663056.

The previous prime is 87994583. The next prime is 87994589. The reversal of 87994587 is 78549978.

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

It is not a de Polignac number, because 87994587 - 2² = 87994583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87994583) 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, 14665762 + ... + 14665767.

It is an arithmetic number, because the mean of its divisors is an integer number (29331530).

Almost surely, 2^87994587 is an apocalyptic number.

87994587 is a deficient number, since it is larger than the sum of its proper divisors (29331533).

87994587 is a wasteful number, since it uses less digits than its factorization.

87994587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29331532.

The product of its digits is 5080320, while the sum is 57.

The square root of 87994587 is about 9380.5430013406. The cubic root of 87994587 is about 444.7868979237.

The spelling of 87994587 in words is "eighty-seven million, nine hundred ninety-four thousand, five hundred eighty-seven".