87609599 has 48 divisors (see below), whose sum is σ = 119771136. Its totient is φ = 63201600.

The previous prime is 87609593. The next prime is 87609617. The reversal of 87609599 is 99590678.

It is a Cunningham number, because it is equal to 9360²-1.

It is not a de Polignac number, because 87609599 - 2⁸ = 87609343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87609599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87609593) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 458594 + ... + 458784.

It is an arithmetic number, because the mean of its divisors is an integer number (2495232).

Almost surely, 2^87609599 is an apocalyptic number.

87609599 is a deficient number, since it is larger than the sum of its proper divisors (32161537).

87609599 is a wasteful number, since it uses less digits than its factorization.

87609599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 87609599 is about 9359.9999465812. Note that the first 4 decimals coincide. The cubic root of 87609599 is about 444.1372823735.

The spelling of 87609599 in words is "eighty-seven million, six hundred nine thousand, five hundred ninety-nine".