87881467 has 4 divisors (see below), whose sum is σ = 87966136. Its totient is φ = 87796800.

The previous prime is 87881389. The next prime is 87881471. The reversal of 87881467 is 76418878.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87881467 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 87881467.

It is not an unprimeable number, because it can be changed into a prime (87888467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40758 + ... + 42859.

It is an arithmetic number, because the mean of its divisors is an integer number (21991534).

Almost surely, 2^87881467 is an apocalyptic number.

87881467 is a deficient number, since it is larger than the sum of its proper divisors (84669).

87881467 is a wasteful number, since it uses less digits than its factorization.

87881467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84668.

The product of its digits is 602112, while the sum is 49.

The square root of 87881467 is about 9374.5115606094. The cubic root of 87881467 is about 444.5962200223.

The spelling of 87881467 in words is "eighty-seven million, eight hundred eighty-one thousand, four hundred sixty-seven".