89105620 has 24 divisors (see below), whose sum is σ = 192180744. Its totient is φ = 34678656.

The previous prime is 89105617. The next prime is 89105629. The reversal of 89105620 is 2650198.

It can be written as a sum of positive squares in 4 ways, for example, as 57790404 + 31315216 = 7602^2 + 5596^2 .

It is a super-3 number, since 3×89105620³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89105629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59467 + ... + 60946.

It is an arithmetic number, because the mean of its divisors is an integer number (8007531).

Almost surely, 2^89105620 is an apocalyptic number.

It is an amenable number.

89105620 is an abundant number, since it is smaller than the sum of its proper divisors (103075124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89105620 is a wasteful number, since it uses less digits than its factorization.

89105620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120459 (or 120457 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 89105620 is about 9439.5773210457. The cubic root of 89105620 is about 446.6510563590.

The spelling of 89105620 in words is "eighty-nine million, one hundred five thousand, six hundred twenty".