65448890 has 16 divisors (see below), whose sum is σ = 126870408. Its totient is φ = 24165696.

The previous prime is 65448871. The next prime is 65448937. The reversal of 65448890 is 9884456.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43705321 + 21743569 = 6611^2 + 4663^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251597 + ... + 251856.

Almost surely, 2^65448890 is an apocalyptic number.

65448890 is a deficient number, since it is larger than the sum of its proper divisors (61421518).

65448890 is a wasteful number, since it uses less digits than its factorization.

65448890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503473.

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

The square root of 65448890 is about 8090.0488255634. The cubic root of 65448890 is about 402.9960244011.

The spelling of 65448890 in words is "sixty-five million, four hundred forty-eight thousand, eight hundred ninety".