65286656 has 40 divisors (see below), whose sum is σ = 134974620. Its totient is φ = 31510528.

The previous prime is 65286649. The next prime is 65286671. The reversal of 65286656 is 65668256.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65286400 + 256 = 8080^2 + 16^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12650 + ... + 17046.

Almost surely, 2^65286656 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 65286656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67487310).

65286656 is an abundant number, since it is smaller than the sum of its proper divisors (69687964).

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

65286656 is an equidigital number, since it uses as much as digits as its factorization.

65286656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4444 (or 4428 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 65286656 is about 8080.0158415686. The cubic root of 65286656 is about 402.6627681644.

The spelling of 65286656 in words is "sixty-five million, two hundred eighty-six thousand, six hundred fifty-six".