64000143 has 6 divisors (see below), whose sum is σ = 92444664. Its totient is φ = 42666756.

The previous prime is 64000127. The next prime is 64000147. The reversal of 64000143 is 34100046.

It is not a de Polignac number, because 64000143 - 2⁴ = 64000127 is a prime.

64000143 is a modest number, since divided by 143 gives 64 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64000147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3555555 + ... + 3555572.

It is an arithmetic number, because the mean of its divisors is an integer number (15407444).

Almost surely, 2^64000143 is an apocalyptic number.

64000143 is a deficient number, since it is larger than the sum of its proper divisors (28444521).

64000143 is a wasteful number, since it uses less digits than its factorization.

64000143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7111133 (or 7111130 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 64000143 is about 8000.0089374950. The cubic root of 64000143 is about 400.0002979164. Note that the first 3 decimals are identical.

Adding to 64000143 its reverse (34100046), we get a palindrome (98100189).

The spelling of 64000143 in words is "sixty-four million, one hundred forty-three", and thus it is an aban number.