64455673 has 2 divisors, whose sum is σ = 64455674. Its totient is φ = 64455672.

The previous prime is 64455617. The next prime is 64455679. The reversal of 64455673 is 37655446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64448784 + 6889 = 8028^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 64455673 - 2⁹ = 64455161 is a prime.

It is not a weakly prime, because it can be changed into another prime (64455679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32227836 + 32227837.

It is an arithmetic number, because the mean of its divisors is an integer number (32227837).

Almost surely, 2^64455673 is an apocalyptic number.

It is an amenable number.

64455673 is a deficient number, since it is larger than the sum of its proper divisors (1).

64455673 is an equidigital number, since it uses as much as digits as its factorization.

64455673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 40.

The square root of 64455673 is about 8028.4290493222. The cubic root of 64455673 is about 400.9470746045.

The spelling of 64455673 in words is "sixty-four million, four hundred fifty-five thousand, six hundred seventy-three".