65481000 has 256 divisors, whose sum is σ = 232727040. Its totient is φ = 15206400.

The previous prime is 65480993. The next prime is 65481037. The reversal of 65481000 is 18456.

65481000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65481000² = 8575522722000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 896964 + ... + 897036.

It is an arithmetic number, because the mean of its divisors is an integer number (909090).

Almost surely, 2^65481000 is an apocalyptic number.

65481000 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 65481000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116363520).

65481000 is an abundant number, since it is smaller than the sum of its proper divisors (167246040).

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

65481000 is a wasteful number, since it uses less digits than its factorization.

65481000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 65481000 is about 8092.0331190622. The cubic root of 65481000 is about 403.0619184991.

Adding to 65481000 its reverse (18456), we get a palindrome (65499456).

The spelling of 65481000 in words is "sixty-five million, four hundred eighty-one thousand".