65989080 has 224 divisors, whose sum is σ = 232940160. Its totient is φ = 16796160.

The previous prime is 65989061. The next prime is 65989097. The reversal of 65989080 is 8098956.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 55 ways as a sum of consecutive naturals, for example, 903924 + ... + 903996.

Almost surely, 2^65989080 is an apocalyptic number.

65989080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65989080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116470080).

65989080 is an abundant number, since it is smaller than the sum of its proper divisors (166951080).

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

65989080 is a wasteful number, since it uses less digits than its factorization.

65989080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 65989080 is about 8123.3662972933. The cubic root of 65989080 is about 404.1017127819.

The spelling of 65989080 in words is "sixty-five million, nine hundred eighty-nine thousand, eighty".