64454219 has 2 divisors, whose sum is σ = 64454220. Its totient is φ = 64454218.

The previous prime is 64454179. The next prime is 64454233. The reversal of 64454219 is 91245446.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64454219 is a prime.

It is a super-2 number, since 2×64454219² = 8308692693799922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64454279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32227109 + 32227110.

It is an arithmetic number, because the mean of its divisors is an integer number (32227110).

Almost surely, 2^64454219 is an apocalyptic number.

64454219 is a deficient number, since it is larger than the sum of its proper divisors (1).

64454219 is an equidigital number, since it uses as much as digits as its factorization.

64454219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 64454219 is about 8028.3384956042. The cubic root of 64454219 is about 400.9440597086.

The spelling of 64454219 in words is "sixty-four million, four hundred fifty-four thousand, two hundred nineteen".