720564847 has 2 divisors, whose sum is σ = 720564848.
Its totient is φ = 720564846.
The previous prime is 720564841. The next prime is 720564851. The reversal of 720564847 is 748465027.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 720564847 - 223 = 712176239 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (720564841) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360282423 + 360282424.
It is an arithmetic number, because the mean of its divisors is an integer number (360282424).
Almost surely, 2720564847 is an apocalyptic number.
720564847 is a deficient number, since it is larger than the sum of its proper divisors (1).
720564847 is an equidigital number, since it uses as much as digits as its factorization.
720564847 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 376320, while the sum is 43.
The square root of 720564847 is about 26843.3389689137.
The cubic root of 720564847 is about 896.5152684198.
The spelling of 720564847 in words is "seven hundred twenty million, five hundred sixty-four thousand, eight hundred forty-seven".