87199005 has 32 divisors (see below), whose sum is σ = 145006848. Its totient is φ = 44710400.

The previous prime is 87198997. The next prime is 87199031. The reversal of 87199005 is 50099178.

It is a happy number.

It is not a de Polignac number, because 87199005 - 2³ = 87198997 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 42667 + ... + 44663.

It is an arithmetic number, because the mean of its divisors is an integer number (4531464).

Almost surely, 2^87199005 is an apocalyptic number.

It is an amenable number.

87199005 is a deficient number, since it is larger than the sum of its proper divisors (57807843).

87199005 is a wasteful number, since it uses less digits than its factorization.

87199005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 87199005 is about 9338.0407473945. The cubic root of 87199005 is about 443.4423595400.

The spelling of 87199005 in words is "eighty-seven million, one hundred ninety-nine thousand, five".