89631 has 12 divisors (see below), whose sum is σ = 135408. Its totient is φ = 57024.

The previous prime is 89627. The next prime is 89633. The reversal of 89631 is 13698.

89631 = T₃₈ + T₃₉ + ... + T₈₃.

It is not a de Polignac number, because 89631 - 2² = 89627 is a prime.

It is a super-2 number, since 2×89631² = 16067432322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 89595 and 89604.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 89631.

It is not an unprimeable number, because it can be changed into a prime (89633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10 + ... + 423.

It is an arithmetic number, because the mean of its divisors is an integer number (11284).

2⁸⁹⁶³¹ is an apocalyptic number.

89631 is a deficient number, since it is larger than the sum of its proper divisors (45777).

89631 is a wasteful number, since it uses less digits than its factorization.

89631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 459 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 89631 is about 299.3843683294. The cubic root of 89631 is about 44.7527177068.

The spelling of 89631 in words is "eighty-nine thousand, six hundred thirty-one".