64318444 has 6 divisors (see below), whose sum is σ = 112557284. Its totient is φ = 32159220.

The previous prime is 64318421. The next prime is 64318447. The reversal of 64318444 is 44481346.

It is a super-2 number, since 2×64318444² = 8273724477162272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64318447) by changing a digit.

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 as a sum of consecutive naturals, namely, 8039802 + ... + 8039809.

Almost surely, 2^64318444 is an apocalyptic number.

It is an amenable number.

64318444 is a deficient number, since it is larger than the sum of its proper divisors (48238840).

64318444 is a wasteful number, since it uses less digits than its factorization.

64318444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16079615 (or 16079613 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 64318444 is about 8019.8780539357. The cubic root of 64318444 is about 400.6623276997.

The spelling of 64318444 in words is "sixty-four million, three hundred eighteen thousand, four hundred forty-four".