65111116 has 48 divisors (see below), whose sum is σ = 136604160. Its totient is φ = 26570880.

The previous prime is 65111107. The next prime is 65111117. The reversal of 65111116 is 61111156.

It is not an unprimeable number, because it can be changed into a prime (65111117) 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 15 ways as a sum of consecutive naturals, for example, 48705 + ... + 50023.

It is an arithmetic number, because the mean of its divisors is an integer number (2845920).

Almost surely, 2^65111116 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 65111116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68302080).

65111116 is an abundant number, since it is smaller than the sum of its proper divisors (71493044).

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

65111116 is a wasteful number, since it uses less digits than its factorization.

65111116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414 (or 1412 counting only the distinct ones).

The product of its digits is 180, while the sum is 22.

The square root of 65111116 is about 8069.1459275440. The cubic root of 65111116 is about 402.3015566926.

The spelling of 65111116 in words is "sixty-five million, one hundred eleven thousand, one hundred sixteen".