64999579 has 2 divisors, whose sum is σ = 64999580. Its totient is φ = 64999578.

The previous prime is 64999547. The next prime is 64999601. The reversal of 64999579 is 97599946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64999579 - 2⁵ = 64999547 is a prime.

It is not a weakly prime, because it can be changed into another prime (64999379) 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, 32499789 + 32499790.

It is an arithmetic number, because the mean of its divisors is an integer number (32499790).

Almost surely, 2^64999579 is an apocalyptic number.

64999579 is a deficient number, since it is larger than the sum of its proper divisors (1).

64999579 is an equidigital number, since it uses as much as digits as its factorization.

64999579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5511240, while the sum is 58.

The square root of 64999579 is about 8062.2316389446. The cubic root of 64999579 is about 402.0717077926.

The spelling of 64999579 in words is "sixty-four million, nine hundred ninety-nine thousand, five hundred seventy-nine".