87304563 has 12 divisors (see below), whose sum is σ = 132744040. Its totient is φ = 55139616.

The previous prime is 87304543. The next prime is 87304589. The reversal of 87304563 is 36540378.

It is a happy number.

It is not a de Polignac number, because 87304563 - 2¹⁶ = 87239027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87304513) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 255106 + ... + 255447.

Almost surely, 2^87304563 is an apocalyptic number.

87304563 is a deficient number, since it is larger than the sum of its proper divisors (45439477).

87304563 is a wasteful number, since it uses less digits than its factorization.

87304563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510578 (or 510575 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 87304563 is about 9343.6910800818. The cubic root of 87304563 is about 443.6212224879.

The spelling of 87304563 in words is "eighty-seven million, three hundred four thousand, five hundred sixty-three".