64444148 has 18 divisors (see below), whose sum is σ = 116806326. Its totient is φ = 31109344.

The previous prime is 64444147. The next prime is 64444157. The reversal of 64444148 is 84144446.

It can be written as a sum of positive squares in 3 ways, for example, as 795664 + 63648484 = 892^2 + 7978^2 .

It is a super-2 number, since 2×64444148² = 8306096422891808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64444141) 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 in 5 ways as a sum of consecutive naturals, for example, 6215 + ... + 12942.

Almost surely, 2^64444148 is an apocalyptic number.

It is an amenable number.

64444148 is a deficient number, since it is larger than the sum of its proper divisors (52362178).

64444148 is a wasteful number, since it uses less digits than its factorization.

64444148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19219 (or 19188 counting only the distinct ones).

The product of its digits is 49152, while the sum is 35.

The square root of 64444148 is about 8027.7112553953. The cubic root of 64444148 is about 400.9231760591.

The spelling of 64444148 in words is "sixty-four million, four hundred forty-four thousand, one hundred forty-eight".