64611143 has 2 divisors, whose sum is σ = 64611144. Its totient is φ = 64611142.

The previous prime is 64611137. The next prime is 64611149. The reversal of 64611143 is 34111646.

It is a balanced prime because it is at equal distance from previous prime (64611137) and next prime (64611149).

It is a cyclic number.

It is not a de Polignac number, because 64611143 - 2¹⁴ = 64594759 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64611149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32305571 + 32305572.

It is an arithmetic number, because the mean of its divisors is an integer number (32305572).

Almost surely, 2^64611143 is an apocalyptic number.

64611143 is a deficient number, since it is larger than the sum of its proper divisors (1).

64611143 is an equidigital number, since it uses as much as digits as its factorization.

64611143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 64611143 is about 8038.1056847991. The cubic root of 64611143 is about 401.2691832587.

Adding to 64611143 its reverse (34111646), we get a palindrome (98722789).

The spelling of 64611143 in words is "sixty-four million, six hundred eleven thousand, one hundred forty-three".