65641896 has 48 divisors (see below), whose sum is σ = 188241300. Its totient is φ = 20593152.

The previous prime is 65641867. The next prime is 65641897. The reversal of 65641896 is 69814656.

65641896 is a `hidden beast` number, since 6 + 564 + 1 + 89 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54552996 + 11088900 = 7386^2 + 3330^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (65641897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25591 + ... + 28038.

Almost surely, 2^65641896 is an apocalyptic number.

It is an amenable number.

65641896 is an abundant number, since it is smaller than the sum of its proper divisors (122599404).

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

65641896 is a wasteful number, since it uses less digits than its factorization.

65641896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53658 (or 53651 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 65641896 is about 8101.9686496555. The cubic root of 65641896 is about 403.3917750315.

The spelling of 65641896 in words is "sixty-five million, six hundred forty-one thousand, eight hundred ninety-six".