87507563 has 12 divisors (see below), whose sum is σ = 103586784. Its totient is φ = 73431600.

The previous prime is 87507547. The next prime is 87507593. The reversal of 87507563 is 36570578.

It is not a de Polignac number, because 87507563 - 2⁴ = 87507547 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 87507563.

It is not an unprimeable number, because it can be changed into a prime (87507503) 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, 26243 + ... + 29388.

It is an arithmetic number, because the mean of its divisors is an integer number (8632232).

Almost surely, 2^87507563 is an apocalyptic number.

87507563 is a deficient number, since it is larger than the sum of its proper divisors (16079221).

87507563 is a wasteful number, since it uses less digits than its factorization.

87507563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55666 (or 55655 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 87507563 is about 9354.5477175543. The cubic root of 87507563 is about 443.9647913942.

The spelling of 87507563 in words is "eighty-seven million, five hundred seven thousand, five hundred sixty-three".