64043671 has 2 divisors, whose sum is σ = 64043672. Its totient is φ = 64043670.

The previous prime is 64043669. The next prime is 64043689. The reversal of 64043671 is 17634046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64043671 - 2¹ = 64043669 is a prime.

Together with 64043669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64043621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32021835 + 32021836.

It is an arithmetic number, because the mean of its divisors is an integer number (32021836).

Almost surely, 2^64043671 is an apocalyptic number.

64043671 is a deficient number, since it is larger than the sum of its proper divisors (1).

64043671 is an equidigital number, since it uses as much as digits as its factorization.

64043671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 64043671 is about 8002.7289720445. The cubic root of 64043671 is about 400.0909605639.

The spelling of 64043671 in words is "sixty-four million, forty-three thousand, six hundred seventy-one".