89865671 has 4 divisors (see below), whose sum is σ = 102703632. Its totient is φ = 77027712.

The previous prime is 89865661. The next prime is 89865679. The reversal of 89865671 is 17656898.

It is a happy number.

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 89865671 - 2¹⁰ = 89864647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89865679) 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, 6418970 + ... + 6418983.

It is an arithmetic number, because the mean of its divisors is an integer number (25675908).

Almost surely, 2^89865671 is an apocalyptic number.

89865671 is a deficient number, since it is larger than the sum of its proper divisors (12837961).

89865671 is a wasteful number, since it uses less digits than its factorization.

89865671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12837960.

The product of its digits is 725760, while the sum is 50.

The square root of 89865671 is about 9479.7505768876. The cubic root of 89865671 is about 447.9174071142.

The spelling of 89865671 in words is "eighty-nine million, eight hundred sixty-five thousand, six hundred seventy-one".