65898560 has 224 divisors, whose sum is σ = 202094592. Its totient is φ = 19906560.

The previous prime is 65898551. The next prime is 65898563. The reversal of 65898560 is 6589856.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is not an unprimeable number, because it can be changed into a prime (65898563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 902684 + ... + 902756.

It is an arithmetic number, because the mean of its divisors is an integer number (902208).

Almost surely, 2^65898560 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 65898560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101047296).

65898560 is an abundant number, since it is smaller than the sum of its proper divisors (136196032).

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

65898560 is a wasteful number, since it uses less digits than its factorization.

65898560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The square root of 65898560 is about 8117.7928034657. The cubic root of 65898560 is about 403.9168537841.

The spelling of 65898560 in words is "sixty-five million, eight hundred ninety-eight thousand, five hundred sixty".