65890448 has 80 divisors (see below), whose sum is σ = 144365760. Its totient is φ = 28933632.

The previous prime is 65890441. The next prime is 65890471. The reversal of 65890448 is 84409856.

It is a happy number.

65890448 is nontrivially palindromic in base 14.

65890448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65890448² = 8683102275281408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65890399 and 65890408.

It is not an unprimeable number, because it can be changed into a prime (65890441) 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 15 ways as a sum of consecutive naturals, for example, 473963 + ... + 474101.

It is an arithmetic number, because the mean of its divisors is an integer number (1804572).

Almost surely, 2^65890448 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 65890448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72182880).

65890448 is an abundant number, since it is smaller than the sum of its proper divisors (78475312).

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

65890448 is a wasteful number, since it uses less digits than its factorization.

65890448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 65890448 is about 8117.2931448852. The cubic root of 65890448 is about 403.9002792794.

The spelling of 65890448 in words is "sixty-five million, eight hundred ninety thousand, four hundred forty-eight".