561767 has 2 divisors, whose sum is σ = 561768. Its totient is φ = 561766.

The previous prime is 561761. The next prime is 561787. The reversal of 561767 is 767165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561767 - 2⁶ = 561703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280883 + 280884.

It is an arithmetic number, because the mean of its divisors is an integer number (280884).

2⁵⁶¹⁷⁶⁷ is an apocalyptic number.

561767 is a deficient number, since it is larger than the sum of its proper divisors (1).

561767 is an equidigital number, since it uses as much as digits as its factorization.

561767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 32.

The square root of 561767 is about 749.5111740328. The cubic root of 561767 is about 82.5123091520.

The spelling of 561767 in words is "five hundred sixty-one thousand, seven hundred sixty-seven".