89645080 has 128 divisors (see below), whose sum is σ = 251164800. Its totient is φ = 28090368.

The previous prime is 89645077. The next prime is 89645081. The reversal of 89645080 is 8054698.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89645081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175866 + ... + 176374.

It is an arithmetic number, because the mean of its divisors is an integer number (1962225).

Almost surely, 2^89645080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89645080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125582400).

89645080 is an abundant number, since it is smaller than the sum of its proper divisors (161519720).

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

89645080 is a wasteful number, since it uses less digits than its factorization.

89645080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 89645080 is about 9468.1085756343. The cubic root of 89645080 is about 447.5506096335.

The spelling of 89645080 in words is "eighty-nine million, six hundred forty-five thousand, eighty".