561758963 has 2 divisors, whose sum is σ = 561758964. Its totient is φ = 561758962.

The previous prime is 561758957. The next prime is 561759019. The reversal of 561758963 is 369857165.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561758963 - 2⁸ = 561758707 is a prime.

It is not a weakly prime, because it can be changed into another prime (561758933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280879481 + 280879482.

It is an arithmetic number, because the mean of its divisors is an integer number (280879482).

Almost surely, 2^561758963 is an apocalyptic number.

561758963 is a deficient number, since it is larger than the sum of its proper divisors (1).

561758963 is an equidigital number, since it uses as much as digits as its factorization.

561758963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 50.

The square root of 561758963 is about 23701.4548709568. The cubic root of 561758963 is about 825.1191565877.

The spelling of 561758963 in words is "five hundred sixty-one million, seven hundred fifty-eight thousand, nine hundred sixty-three".