87673567 has 4 divisors (see below), whose sum is σ = 87719176. Its totient is φ = 87627960.

The previous prime is 87673559. The next prime is 87673577. The reversal of 87673567 is 76537678.

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

It is a cyclic number.

It is not a de Polignac number, because 87673567 - 2³ = 87673559 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 87673567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87673507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19788 + ... + 23809.

It is an arithmetic number, because the mean of its divisors is an integer number (21929794).

Almost surely, 2^87673567 is an apocalyptic number.

87673567 is a deficient number, since it is larger than the sum of its proper divisors (45609).

87673567 is a wasteful number, since it uses less digits than its factorization.

87673567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45608.

The product of its digits is 1481760, while the sum is 49.

The square root of 87673567 is about 9363.4164170990. The cubic root of 87673567 is about 444.2453514366.

The spelling of 87673567 in words is "eighty-seven million, six hundred seventy-three thousand, five hundred sixty-seven".