87671589 has 4 divisors (see below), whose sum is σ = 116895456. Its totient is φ = 58447724.

The previous prime is 87671587. The next prime is 87671629. The reversal of 87671589 is 98517678.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87671589 - 2¹ = 87671587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87671587) 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, 14611929 + ... + 14611934.

It is an arithmetic number, because the mean of its divisors is an integer number (29223864).

Almost surely, 2^87671589 is an apocalyptic number.

It is an amenable number.

87671589 is a deficient number, since it is larger than the sum of its proper divisors (29223867).

87671589 is a wasteful number, since it uses less digits than its factorization.

87671589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29223866.

The product of its digits is 846720, while the sum is 51.

The square root of 87671589 is about 9363.3107926630. The cubic root of 87671589 is about 444.2420105440.

The spelling of 87671589 in words is "eighty-seven million, six hundred seventy-one thousand, five hundred eighty-nine".