87043805 has 8 divisors (see below), whose sum is σ = 105030744. Its totient is φ = 69249600.

The previous prime is 87043777. The next prime is 87043849. The reversal of 87043805 is 50834078.

It can be written as a sum of positive squares in 4 ways, for example, as 9972964 + 77070841 = 3158^2 + 8779^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-87043805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47186 + ... + 48995.

It is an arithmetic number, because the mean of its divisors is an integer number (13128843).

Almost surely, 2^87043805 is an apocalyptic number.

It is an amenable number.

87043805 is a deficient number, since it is larger than the sum of its proper divisors (17986939).

87043805 is a wasteful number, since it uses less digits than its factorization.

87043805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96367.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 87043805 is about 9329.7269520603. The cubic root of 87043805 is about 443.1791182893.

The spelling of 87043805 in words is "eighty-seven million, forty-three thousand, eight hundred five".