64019 has 2 divisors, whose sum is σ = 64020. Its totient is φ = 64018.

The previous prime is 64013. The next prime is 64033. The reversal of 64019 is 91046.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64019 is a prime.

It is a super-2 number, since 2×64019² = 8196864722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32009 + 32010.

It is an arithmetic number, because the mean of its divisors is an integer number (32010).

2⁶⁴⁰¹⁹ is an apocalyptic number.

64019 is a deficient number, since it is larger than the sum of its proper divisors (1).

64019 is an equidigital number, since it uses as much as digits as its factorization.

64019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 64019 is about 253.0197620740. The cubic root of 64019 is about 40.0039579417.

The spelling of 64019 in words is "sixty-four thousand, nineteen".