87899513 has 8 divisors (see below), whose sum is σ = 94785600. Its totient is φ = 81031248.

The previous prime is 87899507. The next prime is 87899521. The reversal of 87899513 is 31599878.

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

It is a cyclic number.

It is not a de Polignac number, because 87899513 - 2⁸ = 87899257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87899533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6878 + ... + 14936.

It is an arithmetic number, because the mean of its divisors is an integer number (11848200).

Almost surely, 2^87899513 is an apocalyptic number.

It is an amenable number.

87899513 is a deficient number, since it is larger than the sum of its proper divisors (6886087).

87899513 is a wasteful number, since it uses less digits than its factorization.

87899513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8911.

The product of its digits is 544320, while the sum is 50.

The square root of 87899513 is about 9375.4740146832. The cubic root of 87899513 is about 444.6266497763.

The spelling of 87899513 in words is "eighty-seven million, eight hundred ninety-nine thousand, five hundred thirteen".