65541040 has 20 divisors (see below), whose sum is σ = 152383104. Its totient is φ = 26216384.

The previous prime is 65541011. The next prime is 65541059. The reversal of 65541040 is 4014556.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 65540996 and 65541014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409552 + ... + 409711.

Almost surely, 2^65541040 is an apocalyptic number.

It is an amenable number.

65541040 is an abundant number, since it is smaller than the sum of its proper divisors (86842064).

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

65541040 is a wasteful number, since it uses less digits than its factorization.

65541040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819276 (or 819270 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 65541040 is about 8095.7420907536. The cubic root of 65541040 is about 403.1850709913.

Adding to 65541040 its reverse (4014556), we get a palindrome (69555596).

The spelling of 65541040 in words is "sixty-five million, five hundred forty-one thousand, forty".