64321843 has 2 divisors, whose sum is σ = 64321844. Its totient is φ = 64321842.

The previous prime is 64321837. The next prime is 64321847. The reversal of 64321843 is 34812346.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64321843 is a prime.

It is not a weakly prime, because it can be changed into another prime (64321847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32160921 + 32160922.

It is an arithmetic number, because the mean of its divisors is an integer number (32160922).

Almost surely, 2^64321843 is an apocalyptic number.

64321843 is a deficient number, since it is larger than the sum of its proper divisors (1).

64321843 is an equidigital number, since it uses as much as digits as its factorization.

64321843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

The square root of 64321843 is about 8020.0899620890. The cubic root of 64321843 is about 400.6693854330.

The spelling of 64321843 in words is "sixty-four million, three hundred twenty-one thousand, eight hundred forty-three".