89672081 has 4 divisors (see below), whose sum is σ = 89708772. Its totient is φ = 89635392.

The previous prime is 89672069. The next prime is 89672111. The reversal of 89672081 is 18027698.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45900625 + 43771456 = 6775^2 + 6616^2 .

It is a cyclic number.

It is not a de Polignac number, because 89672081 - 2¹⁴ = 89655697 is a prime.

It is a super-2 number, since 2×89672081² = 16082164221741122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89672281) 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 3 ways as a sum of consecutive naturals, for example, 14396 + ... + 19661.

It is an arithmetic number, because the mean of its divisors is an integer number (22427193).

Almost surely, 2^89672081 is an apocalyptic number.

It is an amenable number.

89672081 is a deficient number, since it is larger than the sum of its proper divisors (36691).

89672081 is a wasteful number, since it uses less digits than its factorization.

89672081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36690.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 89672081 is about 9469.5343602524. The cubic root of 89672081 is about 447.5955390409.

The spelling of 89672081 in words is "eighty-nine million, six hundred seventy-two thousand, eighty-one".