65808860 has 48 divisors (see below), whose sum is σ = 150076416. Its totient is φ = 24095232.

The previous prime is 65808857. The next prime is 65808893. The reversal of 65808860 is 6880856.

It is a congruent number.

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, 32024 + ... + 34016.

It is an arithmetic number, because the mean of its divisors is an integer number (3126592).

Almost surely, 2^65808860 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 65808860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75038208).

65808860 is an abundant number, since it is smaller than the sum of its proper divisors (84267556).

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

65808860 is a wasteful number, since it uses less digits than its factorization.

65808860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142 (or 2140 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 65808860 is about 8112.2660212791. The cubic root of 65808860 is about 403.7335023148.

The spelling of 65808860 in words is "sixty-five million, eight hundred eight thousand, eight hundred sixty".