65181696 has 72 divisors (see below), whose sum is σ = 175478940. Its totient is φ = 21516288.

The previous prime is 65181667. The next prime is 65181703. The reversal of 65181696 is 69618156.

It is a happy number.

Its product of digits (77760) is a multiple of the sum of its prime divisors (108).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 632781 + ... + 632883.

Almost surely, 2^65181696 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 65181696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87739470).

65181696 is an abundant number, since it is smaller than the sum of its proper divisors (110297244).

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

65181696 is an equidigital number, since it uses as much as digits as its factorization.

65181696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 108 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 65181696 is about 8073.5181922134. The cubic root of 65181696 is about 402.4468682358.

The spelling of 65181696 in words is "sixty-five million, one hundred eighty-one thousand, six hundred ninety-six".