87532985 has 4 divisors (see below), whose sum is σ = 105039588. Its totient is φ = 70026384.

The previous prime is 87532979. The next prime is 87532997. The reversal of 87532985 is 58923578.

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 38700841 + 48832144 = 6221^2 + 6988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87532985 is a prime.

It is a Duffinian 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, 8753294 + ... + 8753303.

It is an arithmetic number, because the mean of its divisors is an integer number (26259897).

Almost surely, 2^87532985 is an apocalyptic number.

It is an amenable number.

87532985 is a deficient number, since it is larger than the sum of its proper divisors (17506603).

87532985 is a wasteful number, since it uses less digits than its factorization.

87532985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17506602.

The product of its digits is 604800, while the sum is 47.

The square root of 87532985 is about 9355.9064232174. The cubic root of 87532985 is about 444.0077796029.

The spelling of 87532985 in words is "eighty-seven million, five hundred thirty-two thousand, nine hundred eighty-five".