89681631 has 8 divisors (see below), whose sum is σ = 128773680. Its totient is φ = 55188672.

The previous prime is 89681629. The next prime is 89681639. The reversal of 89681631 is 13618698.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89681631 - 2¹ = 89681629 is a prime.

It is a super-2 number, since 2×89681631² = 16085589877640322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89681639) 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 7 ways as a sum of consecutive naturals, for example, 1149726 + ... + 1149803.

It is an arithmetic number, because the mean of its divisors is an integer number (16096710).

Almost surely, 2^89681631 is an apocalyptic number.

89681631 is a deficient number, since it is larger than the sum of its proper divisors (39092049).

89681631 is a wasteful number, since it uses less digits than its factorization.

89681631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299545.

The product of its digits is 62208, while the sum is 42.

The square root of 89681631 is about 9470.0385954863. The cubic root of 89681631 is about 447.6114279910.

The spelling of 89681631 in words is "eighty-nine million, six hundred eighty-one thousand, six hundred thirty-one".