65656060 has 24 divisors (see below), whose sum is σ = 139247136. Its totient is φ = 26001600.

The previous prime is 65656049. The next prime is 65656061. The reversal of 65656060 is 6065656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65656061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14232 + ... + 18271.

It is an arithmetic number, because the mean of its divisors is an integer number (5801964).

Almost surely, 2^65656060 is an apocalyptic number.

It is an amenable number.

65656060 is an abundant number, since it is smaller than the sum of its proper divisors (73591076).

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

65656060 is a wasteful number, since it uses less digits than its factorization.

65656060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32613 (or 32611 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 65656060 is about 8102.8427110490. The cubic root of 65656060 is about 403.4207871439.

The spelling of 65656060 in words is "sixty-five million, six hundred fifty-six thousand, sixty".