64841143 has 2 divisors, whose sum is σ = 64841144. Its totient is φ = 64841142.

The previous prime is 64841123. The next prime is 64841173. The reversal of 64841143 is 34114846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64841143 - 2⁹ = 64840631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64841113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32420571 + 32420572.

It is an arithmetic number, because the mean of its divisors is an integer number (32420572).

Almost surely, 2^64841143 is an apocalyptic number.

64841143 is a deficient number, since it is larger than the sum of its proper divisors (1).

64841143 is an equidigital number, since it uses as much as digits as its factorization.

64841143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

The square root of 64841143 is about 8052.3998286225. The cubic root of 64841143 is about 401.7447597184.

Adding to 64841143 its reverse (34114846), we get a palindrome (98955989).

The spelling of 64841143 in words is "sixty-four million, eight hundred forty-one thousand, one hundred forty-three".