64673579 has 2 divisors, whose sum is σ = 64673580. Its totient is φ = 64673578.

The previous prime is 64673573. The next prime is 64673711. The reversal of 64673579 is 97537646.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64673579 - 2¹⁶ = 64608043 is a prime.

It is not a weakly prime, because it can be changed into another prime (64673573) 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, 32336789 + 32336790.

It is an arithmetic number, because the mean of its divisors is an integer number (32336790).

Almost surely, 2^64673579 is an apocalyptic number.

64673579 is a deficient number, since it is larger than the sum of its proper divisors (1).

64673579 is an equidigital number, since it uses as much as digits as its factorization.

64673579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 47.

The square root of 64673579 is about 8041.9884978779. The cubic root of 64673579 is about 401.3983951141.

The spelling of 64673579 in words is "sixty-four million, six hundred seventy-three thousand, five hundred seventy-nine".