561650797 has 2 divisors, whose sum is σ = 561650798. Its totient is φ = 561650796.

The previous prime is 561650753. The next prime is 561650813. The reversal of 561650797 is 797056165.

It is a happy number.

561650797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394181316 + 167469481 = 19854^2 + 12941^2 .

It is a cyclic number.

It is not a de Polignac number, because 561650797 - 2⁷ = 561650669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561650197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280825398 + 280825399.

It is an arithmetic number, because the mean of its divisors is an integer number (280825399).

Almost surely, 2^561650797 is an apocalyptic number.

It is an amenable number.

561650797 is a deficient number, since it is larger than the sum of its proper divisors (1).

561650797 is an equidigital number, since it uses as much as digits as its factorization.

561650797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 561650797 is about 23699.1729180577. The cubic root of 561650797 is about 825.0661946275.

The spelling of 561650797 in words is "five hundred sixty-one million, six hundred fifty thousand, seven hundred ninety-seven".