87870085 has 8 divisors (see below), whose sum is σ = 105818400. Its totient is φ = 70046544.

The previous prime is 87870067. The next prime is 87870091. The reversal of 87870085 is 58007878.

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 87870085 - 2²¹ = 85772933 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 7 ways as a sum of consecutive naturals, for example, 29635 + ... + 32464.

It is an arithmetic number, because the mean of its divisors is an integer number (13227300).

Almost surely, 2^87870085 is an apocalyptic number.

It is an amenable number.

87870085 is a deficient number, since it is larger than the sum of its proper divisors (17948315).

87870085 is a wasteful number, since it uses less digits than its factorization.

87870085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62387.

The product of its (nonzero) digits is 125440, while the sum is 43.

The square root of 87870085 is about 9373.9044693233. The cubic root of 87870085 is about 444.5770251801.

The spelling of 87870085 in words is "eighty-seven million, eight hundred seventy thousand, eighty-five".