64454279 has 2 divisors, whose sum is σ = 64454280. Its totient is φ = 64454278.

The previous prime is 64454267. The next prime is 64454311. The reversal of 64454279 is 97245446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64454279 - 2¹⁶ = 64388743 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64454219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32227139 + 32227140.

It is an arithmetic number, because the mean of its divisors is an integer number (32227140).

Almost surely, 2^64454279 is an apocalyptic number.

64454279 is a deficient number, since it is larger than the sum of its proper divisors (1).

64454279 is an equidigital number, since it uses as much as digits as its factorization.

64454279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 41.

The square root of 64454279 is about 8028.3422323665. The cubic root of 64454279 is about 400.9441841206.

The spelling of 64454279 in words is "sixty-four million, four hundred fifty-four thousand, two hundred seventy-nine".