87597987 has 4 divisors (see below), whose sum is σ = 116797320. Its totient is φ = 58398656.

The previous prime is 87597973. The next prime is 87598003. The reversal of 87597987 is 78979578.

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

It is a cyclic number.

It is not a de Polignac number, because 87597987 - 2⁷ = 87597859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87597987.

It is not an unprimeable number, because it can be changed into a prime (87597947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14599662 + ... + 14599667.

It is an arithmetic number, because the mean of its divisors is an integer number (29199330).

Almost surely, 2^87597987 is an apocalyptic number.

87597987 is a deficient number, since it is larger than the sum of its proper divisors (29199333).

87597987 is a wasteful number, since it uses less digits than its factorization.

87597987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29199332.

The product of its digits is 8890560, while the sum is 60.

The square root of 87597987 is about 9359.3796268770. The cubic root of 87597987 is about 444.1176591433.

The spelling of 87597987 in words is "eighty-seven million, five hundred ninety-seven thousand, nine hundred eighty-seven".