87010565 has 8 divisors (see below), whose sum is σ = 105337368. Its totient is φ = 68992000.

The previous prime is 87010549. The next prime is 87010603. The reversal of 87010565 is 56501078.

It can be written as a sum of positive squares in 4 ways, for example, as 3214849 + 83795716 = 1793^2 + 9154^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87010565 - 2⁴ = 87010549 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76436 + ... + 77565.

It is an arithmetic number, because the mean of its divisors is an integer number (13167171).

Almost surely, 2^87010565 is an apocalyptic number.

It is an amenable number.

87010565 is a deficient number, since it is larger than the sum of its proper divisors (18326803).

87010565 is a wasteful number, since it uses less digits than its factorization.

87010565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154119.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 87010565 is about 9327.9453793427. The cubic root of 87010565 is about 443.1226978488.

The spelling of 87010565 in words is "eighty-seven million, ten thousand, five hundred sixty-five".