87438663 has 32 divisors (see below), whose sum is σ = 145582080. Its totient is φ = 51464160.

The previous prime is 87438653. The next prime is 87438671. The reversal of 87438663 is 36683478.

It is not a de Polignac number, because 87438663 - 2⁹ = 87438151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87438623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2658 + ... + 13488.

It is an arithmetic number, because the mean of its divisors is an integer number (4549440).

Almost surely, 2^87438663 is an apocalyptic number.

87438663 is a deficient number, since it is larger than the sum of its proper divisors (58143417).

87438663 is a wasteful number, since it uses less digits than its factorization.

87438663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10876 (or 10870 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 87438663 is about 9350.8642916043. The cubic root of 87438663 is about 443.8482406838.

The spelling of 87438663 in words is "eighty-seven million, four hundred thirty-eight thousand, six hundred sixty-three".