65830856 has 64 divisors (see below), whose sum is σ = 156871680. Its totient is φ = 25194240.

The previous prime is 65830847. The next prime is 65830883. The reversal of 65830856 is 65803856.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21110 + ... + 24026.

It is an arithmetic number, because the mean of its divisors is an integer number (2451120).

Almost surely, 2^65830856 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 65830856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78435840).

65830856 is an abundant number, since it is smaller than the sum of its proper divisors (91040824).

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

65830856 is a wasteful number, since it uses less digits than its factorization.

65830856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974 (or 2970 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 65830856 is about 8113.6216327852. The cubic root of 65830856 is about 403.7784786949.

Subtracting from 65830856 its reverse (65803856), we obtain a cube (27000 = 30³).

The spelling of 65830856 in words is "sixty-five million, eight hundred thirty thousand, eight hundred fifty-six".