64449347 has 2 divisors, whose sum is σ = 64449348. Its totient is φ = 64449346.

The previous prime is 64449337. The next prime is 64449353. The reversal of 64449347 is 74394446.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64449347 - 2¹⁸ = 64187203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64449337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32224673 + 32224674.

It is an arithmetic number, because the mean of its divisors is an integer number (32224674).

Almost surely, 2^64449347 is an apocalyptic number.

64449347 is a deficient number, since it is larger than the sum of its proper divisors (1).

64449347 is an equidigital number, since it uses as much as digits as its factorization.

64449347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 64449347 is about 8028.0350646967. The cubic root of 64449347 is about 400.9339571960.

The spelling of 64449347 in words is "sixty-four million, four hundred forty-nine thousand, three hundred forty-seven".