87085575 has 18 divisors (see below), whose sum is σ = 155980344. Its totient is φ = 46445520.

The previous prime is 87085561. The next prime is 87085631. The reversal of 87085575 is 57558078.

It is a happy number.

87085575 is a `hidden beast` number, since 8 + 70 + 8 + 5 + 575 = 666.

It is not a de Polignac number, because 87085575 - 2⁷ = 87085447 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87085575.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 193299 + ... + 193748.

Almost surely, 2^87085575 is an apocalyptic number.

87085575 is a deficient number, since it is larger than the sum of its proper divisors (68894769).

87085575 is a wasteful number, since it uses less digits than its factorization.

87085575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387063 (or 387055 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 45.

The square root of 87085575 is about 9331.9652271105. The cubic root of 87085575 is about 443.2499968984.

The spelling of 87085575 in words is "eighty-seven million, eighty-five thousand, five hundred seventy-five".