561724847 has 2 divisors, whose sum is σ = 561724848. Its totient is φ = 561724846.

The previous prime is 561724843. The next prime is 561724903. The reversal of 561724847 is 748427165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561724847 - 2² = 561724843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561724798 and 561724807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561724841) 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, 280862423 + 280862424.

It is an arithmetic number, because the mean of its divisors is an integer number (280862424).

Almost surely, 2^561724847 is an apocalyptic number.

561724847 is a deficient number, since it is larger than the sum of its proper divisors (1).

561724847 is an equidigital number, since it uses as much as digits as its factorization.

561724847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 44.

The square root of 561724847 is about 23700.7351573743. The cubic root of 561724847 is about 825.1024529023.

The spelling of 561724847 in words is "five hundred sixty-one million, seven hundred twenty-four thousand, eight hundred forty-seven".