65642882 has 18 divisors (see below), whose sum is σ = 104908347. Its totient is φ = 30799104.

The previous prime is 65642881. The next prime is 65642909. The reversal of 65642882 is 28824656.

It can be written as a sum of positive squares in 5 ways, for example, as 36493681 + 29149201 = 6041^2 + 5399^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5729.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65642881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 194618 + ... + 194954.

Almost surely, 2^65642882 is an apocalyptic number.

65642882 is a deficient number, since it is larger than the sum of its proper divisors (39265465).

65642882 is an equidigital number, since it uses as much as digits as its factorization.

65642882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 356 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 65642882 is about 8102.0294988355. The cubic root of 65642882 is about 403.3937947898.

The spelling of 65642882 in words is "sixty-five million, six hundred forty-two thousand, eight hundred eighty-two".