65677856 has 48 divisors (see below), whose sum is σ = 134719200. Its totient is φ = 31492608.

The previous prime is 65677853. The next prime is 65677879. The reversal of 65677856 is 65877656.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65677853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80780 + ... + 81588.

It is an arithmetic number, because the mean of its divisors is an integer number (2806650).

Almost surely, 2^65677856 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 65677856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67359600).

65677856 is an abundant number, since it is smaller than the sum of its proper divisors (69041344).

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

65677856 is a wasteful number, since it uses less digits than its factorization.

65677856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 913 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 50.

The square root of 65677856 is about 8104.1875595275. The cubic root of 65677856 is about 403.4654237276.

The spelling of 65677856 in words is "sixty-five million, six hundred seventy-seven thousand, eight hundred fifty-six".