73220579 has 2 divisors, whose sum is σ = 73220580. Its totient is φ = 73220578.

The previous prime is 73220551. The next prime is 73220591. The reversal of 73220579 is 97502237.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73220579 - 2²⁰ = 72172003 is a prime.

It is a super-2 number, since 2×73220579² = 10722506378190482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73220779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36610289 + 36610290.

It is an arithmetic number, because the mean of its divisors is an integer number (36610290).

Almost surely, 2^73220579 is an apocalyptic number.

73220579 is a deficient number, since it is larger than the sum of its proper divisors (1).

73220579 is an equidigital number, since it uses as much as digits as its factorization.

73220579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 73220579 is about 8556.9024185157. The cubic root of 73220579 is about 418.3544436084.

The spelling of 73220579 in words is "seventy-three million, two hundred twenty thousand, five hundred seventy-nine".