89780166 has 48 divisors (see below), whose sum is σ = 225976608. Its totient is φ = 25228800.

The previous prime is 89780153. The next prime is 89780203. The reversal of 89780166 is 66108798.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1846 + ... + 13526.

It is an arithmetic number, because the mean of its divisors is an integer number (4707846).

Almost surely, 2^89780166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89780166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112988304).

89780166 is an abundant number, since it is smaller than the sum of its proper divisors (136196442).

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

89780166 is a wasteful number, since it uses less digits than its factorization.

89780166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11757 (or 11754 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 89780166 is about 9475.2396275767. The cubic root of 89780166 is about 447.7753011954.

The spelling of 89780166 in words is "eighty-nine million, seven hundred eighty thousand, one hundred sixty-six".