65652140 has 24 divisors (see below), whose sum is σ = 138393360. Its totient is φ = 26161088.

The previous prime is 65652137. The next prime is 65652151. The reversal of 65652140 is 4125656.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722 + ... + 11481.

It is an arithmetic number, because the mean of its divisors is an integer number (5766390).

Almost surely, 2^65652140 is an apocalyptic number.

It is an amenable number.

65652140 is an abundant number, since it is smaller than the sum of its proper divisors (72741220).

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

65652140 is a wasteful number, since it uses less digits than its factorization.

65652140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12481 (or 12479 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 65652140 is about 8102.6008170217. The cubic root of 65652140 is about 403.4127582279.

Adding to 65652140 its reverse (4125656), we get a palindrome (69777796).

The spelling of 65652140 in words is "sixty-five million, six hundred fifty-two thousand, one hundred forty".