87523587 has 6 divisors (see below), whose sum is σ = 126422972. Its totient is φ = 58349052.

The previous prime is 87523577. The next prime is 87523591. The reversal of 87523587 is 78532578.

It is not a de Polignac number, because 87523587 - 2⁷ = 87523459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87523567) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 4862413 + ... + 4862430.

Almost surely, 2^87523587 is an apocalyptic number.

87523587 is a deficient number, since it is larger than the sum of its proper divisors (38899385).

87523587 is a wasteful number, since it uses less digits than its factorization.

87523587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9724849 (or 9724846 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 87523587 is about 9355.4041601633. The cubic root of 87523587 is about 443.9918887001.

The spelling of 87523587 in words is "eighty-seven million, five hundred twenty-three thousand, five hundred eighty-seven".