64489448 has 8 divisors (see below), whose sum is σ = 120917730. Its totient is φ = 32244720.

The previous prime is 64489429. The next prime is 64489463. The reversal of 64489448 is 84498446.

64489448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 50665924 + 13823524 = 7118^2 + 3718^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4030583 + ... + 4030598.

Almost surely, 2^64489448 is an apocalyptic number.

It is an amenable number.

64489448 is a deficient number, since it is larger than the sum of its proper divisors (56428282).

64489448 is a wasteful number, since it uses less digits than its factorization.

64489448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8061187 (or 8061183 counting only the distinct ones).

The product of its digits is 884736, while the sum is 47.

The square root of 64489448 is about 8030.5322364087. The cubic root of 64489448 is about 401.0170949360.

The spelling of 64489448 in words is "sixty-four million, four hundred eighty-nine thousand, four hundred forty-eight".