87738563 has 4 divisors (see below), whose sum is σ = 95714808. Its totient is φ = 79762320.

The previous prime is 87738527. The next prime is 87738617. The reversal of 87738563 is 36583778.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87738563 - 2²² = 83544259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87738163) 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 3 ways as a sum of consecutive naturals, for example, 3988106 + ... + 3988127.

It is an arithmetic number, because the mean of its divisors is an integer number (23928702).

Almost surely, 2^87738563 is an apocalyptic number.

87738563 is a deficient number, since it is larger than the sum of its proper divisors (7976245).

87738563 is a wasteful number, since it uses less digits than its factorization.

87738563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7976244.

The product of its digits is 846720, while the sum is 47.

The square root of 87738563 is about 9366.8865158066. The cubic root of 87738563 is about 444.3551034009.

The spelling of 87738563 in words is "eighty-seven million, seven hundred thirty-eight thousand, five hundred sixty-three".