65311056 has 160 divisors (see below), whose sum is σ = 201872000. Its totient is φ = 20155392.

The previous prime is 65311049. The next prime is 65311061. The reversal of 65311056 is 65011356.

It is a happy number.

65311056 is a `hidden beast` number, since 653 + 1 + 1 + 0 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 599130 + ... + 599238.

It is an arithmetic number, because the mean of its divisors is an integer number (1261700).

Almost surely, 2^65311056 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 65311056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100936000).

65311056 is an abundant number, since it is smaller than the sum of its proper divisors (136560944).

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

65311056 is a wasteful number, since it uses less digits than its factorization.

65311056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 65311056 is about 8081.5255985488. The cubic root of 65311056 is about 402.7129251614.

The spelling of 65311056 in words is "sixty-five million, three hundred eleven thousand, fifty-six".