89181617 has 6 divisors (see below), whose sum is σ = 103741938. Its totient is φ = 76441344.

The previous prime is 89181593. The next prime is 89181619. The reversal of 89181617 is 71618198.

It can be written as a sum of positive squares in only one way, i.e., 88378801 + 802816 = 9401^2 + 896^2 .

It is not a de Polignac number, because 89181617 - 2⁶ = 89181553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89181619) 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 5 ways as a sum of consecutive naturals, for example, 909968 + ... + 910065.

It is an arithmetic number, because the mean of its divisors is an integer number (17290323).

Almost surely, 2^89181617 is an apocalyptic number.

It is an amenable number.

89181617 is a deficient number, since it is larger than the sum of its proper divisors (14560321).

89181617 is a wasteful number, since it uses less digits than its factorization.

89181617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820047 (or 1820040 counting only the distinct ones).

The product of its digits is 24192, while the sum is 41.

The square root of 89181617 is about 9443.6019081704. The cubic root of 89181617 is about 446.7780011942.

It can be divided in two parts, 89181 and 617, that added together give a palindrome (89798).

The spelling of 89181617 in words is "eighty-nine million, one hundred eighty-one thousand, six hundred seventeen".