87659539 has 6 divisors (see below), whose sum is σ = 96353180. Its totient is φ = 79690380.

The previous prime is 87659503. The next prime is 87659581. The reversal of 87659539 is 93595678.

It is not a de Polignac number, because 87659539 - 2¹⁵ = 87626771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87659339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 362109 + ... + 362350.

Almost surely, 2^87659539 is an apocalyptic number.

87659539 is a deficient number, since it is larger than the sum of its proper divisors (8693641).

87659539 is a wasteful number, since it uses less digits than its factorization.

87659539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724481 (or 724470 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 52.

The square root of 87659539 is about 9362.6673015760. The cubic root of 87659539 is about 444.2216567001.

The spelling of 87659539 in words is "eighty-seven million, six hundred fifty-nine thousand, five hundred thirty-nine".