87017285 has 4 divisors (see below), whose sum is σ = 104420748. Its totient is φ = 69613824.

The previous prime is 87017221. The next prime is 87017291. The reversal of 87017285 is 58271078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49477156 + 37540129 = 7034^2 + 6127^2 .

It is a cyclic number.

It is not a de Polignac number, because 87017285 - 2⁶ = 87017221 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 3 ways as a sum of consecutive naturals, for example, 8701724 + ... + 8701733.

It is an arithmetic number, because the mean of its divisors is an integer number (26105187).

Almost surely, 2^87017285 is an apocalyptic number.

It is an amenable number.

87017285 is a deficient number, since it is larger than the sum of its proper divisors (17403463).

87017285 is a wasteful number, since it uses less digits than its factorization.

87017285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17403462.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 87017285 is about 9328.3055803292. The cubic root of 87017285 is about 443.1341053059.

The spelling of 87017285 in words is "eighty-seven million, seventeen thousand, two hundred eighty-five".