64144016 has 10 divisors (see below), whose sum is σ = 124279062. Its totient is φ = 32072000.

The previous prime is 64144013. The next prime is 64144037. The reversal of 64144016 is 61044146.

It can be written as a sum of positive squares in only one way, i.e., 39740416 + 24403600 = 6304^2 + 4940^2 .

It is a super-2 number, since 2×64144016² = 8228909577216512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64144013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2004485 + ... + 2004516.

Almost surely, 2^64144016 is an apocalyptic number.

It is an amenable number.

64144016 is a deficient number, since it is larger than the sum of its proper divisors (60135046).

64144016 is a wasteful number, since it uses less digits than its factorization.

64144016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009009 (or 4009003 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 64144016 is about 8008.9959420641. The cubic root of 64144016 is about 400.2998085643.

The spelling of 64144016 in words is "sixty-four million, one hundred forty-four thousand, sixteen".