65200540 has 12 divisors (see below), whose sum is σ = 136921176. Its totient is φ = 26080208.

The previous prime is 65200523. The next prime is 65200543. The reversal of 65200540 is 4500256.

It is a super-2 number, since 2×65200540² = 8502220832583200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65200543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1629994 + ... + 1630033.

It is an arithmetic number, because the mean of its divisors is an integer number (11410098).

Almost surely, 2^65200540 is an apocalyptic number.

It is an amenable number.

65200540 is an abundant number, since it is smaller than the sum of its proper divisors (71720636).

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

65200540 is a wasteful number, since it uses less digits than its factorization.

65200540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260036 (or 3260034 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 65200540 is about 8074.6851331801. The cubic root of 65200540 is about 402.4856469040.

Adding to 65200540 its reverse (4500256), we get a palindrome (69700796).

The spelling of 65200540 in words is "sixty-five million, two hundred thousand, five hundred forty".