65571996 has 96 divisors (see below), whose sum is σ = 181440000. Its totient is φ = 18420864.

The previous prime is 65571991. The next prime is 65572007. The reversal of 65571996 is 69917556.

65571996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65571991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366235 + ... + 366413.

It is an arithmetic number, because the mean of its divisors is an integer number (1890000).

Almost surely, 2^65571996 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 65571996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90720000).

65571996 is an abundant number, since it is smaller than the sum of its proper divisors (115868004).

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

65571996 is a wasteful number, since it uses less digits than its factorization.

65571996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 280 counting only the distinct ones).

The product of its digits is 510300, while the sum is 48.

The square root of 65571996 is about 8097.6537342615. The cubic root of 65571996 is about 403.2485377524.

The spelling of 65571996 in words is "sixty-five million, five hundred seventy-one thousand, nine hundred ninety-six".