87043165 has 12 divisors (see below), whose sum is σ = 114811452. Its totient is φ = 63303680.

The previous prime is 87043163. The next prime is 87043169. The reversal of 87043165 is 56134078.

It can be written as a sum of positive squares in 2 ways, for example, as 12859396 + 74183769 = 3586^2 + 8613^2 .

It is not a de Polignac number, because 87043165 - 2¹ = 87043163 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 87043165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87043163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71332 + ... + 72541.

It is an arithmetic number, because the mean of its divisors is an integer number (9567621).

Almost surely, 2^87043165 is an apocalyptic number.

It is an amenable number.

87043165 is a deficient number, since it is larger than the sum of its proper divisors (27768287).

87043165 is a wasteful number, since it uses less digits than its factorization.

87043165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143900 (or 143889 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 87043165 is about 9329.6926530299. The cubic root of 87043165 is about 443.1780321108.

The spelling of 87043165 in words is "eighty-seven million, forty-three thousand, one hundred sixty-five".