87510065 has 4 divisors (see below), whose sum is σ = 105012084. Its totient is φ = 70008048.

The previous prime is 87510053. The next prime is 87510077. The reversal of 87510065 is 56001578.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56001578 = 2 ⋅28000789.

It is an interprime number because it is at equal distance from previous prime (87510053) and next prime (87510077).

It can be written as a sum of positive squares in 2 ways, for example, as 42981136 + 44528929 = 6556^2 + 6673^2 .

It is a cyclic number.

It is not a de Polignac number, because 87510065 - 2²² = 83315761 is a prime.

It is a super-2 number, since 2×87510065² = 15316022952608450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 8751002 + ... + 8751011.

It is an arithmetic number, because the mean of its divisors is an integer number (26253021).

Almost surely, 2^87510065 is an apocalyptic number.

It is an amenable number.

87510065 is a deficient number, since it is larger than the sum of its proper divisors (17502019).

87510065 is a wasteful number, since it uses less digits than its factorization.

87510065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17502018.

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

The square root of 87510065 is about 9354.6814483445. The cubic root of 87510065 is about 443.9690226068.

The spelling of 87510065 in words is "eighty-seven million, five hundred ten thousand, sixty-five".