87135165 has 24 divisors (see below), whose sum is σ = 162653400. Its totient is φ = 42897024.

The previous prime is 87135161. The next prime is 87135229. The reversal of 87135165 is 56153178.

It can be written as a sum of positive squares in 4 ways, for example, as 11758041 + 75377124 = 3429^2 + 8682^2 .

It is not a de Polignac number, because 87135165 - 2² = 87135161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87135161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73890 + ... + 75059.

It is an arithmetic number, because the mean of its divisors is an integer number (6777225).

Almost surely, 2^87135165 is an apocalyptic number.

It is an amenable number.

87135165 is a deficient number, since it is larger than the sum of its proper divisors (75518235).

87135165 is a wasteful number, since it uses less digits than its factorization.

87135165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148973 (or 148970 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 87135165 is about 9334.6218455811. The cubic root of 87135165 is about 443.3341156763.

The spelling of 87135165 in words is "eighty-seven million, one hundred thirty-five thousand, one hundred sixty-five".