87085565 has 8 divisors (see below), whose sum is σ = 119431680. Its totient is φ = 59715792.

The previous prime is 87085561. The next prime is 87085631. The reversal of 87085565 is 56558078.

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 87085565 - 2² = 87085561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87085561) 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, 1244045 + ... + 1244114.

It is an arithmetic number, because the mean of its divisors is an integer number (14928960).

Almost surely, 2^87085565 is an apocalyptic number.

It is an amenable number.

87085565 is a deficient number, since it is larger than the sum of its proper divisors (32346115).

87085565 is a wasteful number, since it uses less digits than its factorization.

87085565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488171.

The product of its (nonzero) digits is 336000, while the sum is 44.

The square root of 87085565 is about 9331.9646913177. The cubic root of 87085565 is about 443.2499799323.

The spelling of 87085565 in words is "eighty-seven million, eighty-five thousand, five hundred sixty-five".