64481288 has 32 divisors (see below), whose sum is σ = 127828800. Its totient is φ = 30408768.

The previous prime is 64481273. The next prime is 64481293. The reversal of 64481288 is 88218446.

64481288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 7 ways as a sum of consecutive naturals, for example, 39170 + ... + 40782.

It is an arithmetic number, because the mean of its divisors is an integer number (3994650).

Almost surely, 2^64481288 is an apocalyptic number.

It is an amenable number.

64481288 is a deficient number, since it is larger than the sum of its proper divisors (63347512).

64481288 is a wasteful number, since it uses less digits than its factorization.

64481288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1897 counting only the distinct ones).

The product of its digits is 98304, while the sum is 41.

The square root of 64481288 is about 8030.0241593659. The cubic root of 64481288 is about 401.0001803471. Note that the first 3 decimals are identical.

The spelling of 64481288 in words is "sixty-four million, four hundred eighty-one thousand, two hundred eighty-eight".