64988579 has 2 divisors, whose sum is σ = 64988580. Its totient is φ = 64988578.

The previous prime is 64988563. The next prime is 64988587. The reversal of 64988579 is 97588946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64988579 - 2⁴ = 64988563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64988549) 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, 32494289 + 32494290.

It is an arithmetic number, because the mean of its divisors is an integer number (32494290).

Almost surely, 2^64988579 is an apocalyptic number.

64988579 is a deficient number, since it is larger than the sum of its proper divisors (1).

64988579 is an equidigital number, since it uses as much as digits as its factorization.

64988579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 56.

The square root of 64988579 is about 8061.5494168305. The cubic root of 64988579 is about 402.0490253980.

The spelling of 64988579 in words is "sixty-four million, nine hundred eighty-eight thousand, five hundred seventy-nine".