65543140 has 48 divisors (see below), whose sum is σ = 150151680. Its totient is φ = 23886720.

The previous prime is 65543131. The next prime is 65543183. The reversal of 65543140 is 4134556.

It is a junction number, because it is equal to n+sod(n) for n = 65543099 and 65543108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18945 + ... + 22135.

It is an arithmetic number, because the mean of its divisors is an integer number (3128160).

Almost surely, 2^65543140 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 65543140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75075840).

65543140 is an abundant number, since it is smaller than the sum of its proper divisors (84608540).

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

65543140 is a wasteful number, since it uses less digits than its factorization.

65543140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292 (or 3290 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 65543140 is about 8095.8717875223. The cubic root of 65543140 is about 403.1893770953.

Adding to 65543140 its reverse (4134556), we get a palindrome (69677696).

The spelling of 65543140 in words is "sixty-five million, five hundred forty-three thousand, one hundred forty".