65006656 has 56 divisors (see below), whose sum is σ = 151570944. Its totient is φ = 27271680.

The previous prime is 65006647. The next prime is 65006701. The reversal of 65006656 is 65660056.

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, 5601 + ... + 12703.

It is an arithmetic number, because the mean of its divisors is an integer number (2706624).

Almost surely, 2^65006656 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 65006656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75785472).

65006656 is an abundant number, since it is smaller than the sum of its proper divisors (86564288).

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

65006656 is a wasteful number, since it uses less digits than its factorization.

65006656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7139 (or 7129 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 65006656 is about 8062.6705253284. The cubic root of 65006656 is about 402.0862994677.

The spelling of 65006656 in words is "sixty-five million, six thousand, six hundred fifty-six".