720605579 has 2 divisors, whose sum is σ = 720605580. Its totient is φ = 720605578.

The previous prime is 720605497. The next prime is 720605581. The reversal of 720605579 is 975506027.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720605579 is a prime.

Together with 720605581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (720605779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360302789 + 360302790.

It is an arithmetic number, because the mean of its divisors is an integer number (360302790).

Almost surely, 2^720605579 is an apocalyptic number.

720605579 is a deficient number, since it is larger than the sum of its proper divisors (1).

720605579 is an equidigital number, since it uses as much as digits as its factorization.

720605579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 720605579 is about 26844.0976566544. The cubic root of 720605579 is about 896.5321608026.

The spelling of 720605579 in words is "seven hundred twenty million, six hundred five thousand, five hundred seventy-nine".