65680872 has 32 divisors (see below), whose sum is σ = 172845600. Its totient is φ = 20741184.

The previous prime is 65680829. The next prime is 65680897. The reversal of 65680872 is 27808656.

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, 71563 + ... + 72474.

It is an arithmetic number, because the mean of its divisors is an integer number (5401425).

Almost surely, 2^65680872 is an apocalyptic number.

It is an amenable number.

65680872 is an abundant number, since it is smaller than the sum of its proper divisors (107164728).

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

65680872 is a wasteful number, since it uses less digits than its factorization.

65680872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144065 (or 144061 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 65680872 is about 8104.3736340324. The cubic root of 65680872 is about 403.4715994930.

The spelling of 65680872 in words is "sixty-five million, six hundred eighty thousand, eight hundred seventy-two".