561772067 has 2 divisors, whose sum is σ = 561772068. Its totient is φ = 561772066.

The previous prime is 561772039. The next prime is 561772091. The reversal of 561772067 is 760277165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561772067 - 2¹⁴ = 561755683 is a prime.

It is a super-2 number, since 2×561772067² = 631175710522904978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (561772007) 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, 280886033 + 280886034.

It is an arithmetic number, because the mean of its divisors is an integer number (280886034).

Almost surely, 2^561772067 is an apocalyptic number.

561772067 is a deficient number, since it is larger than the sum of its proper divisors (1).

561772067 is an equidigital number, since it uses as much as digits as its factorization.

561772067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 561772067 is about 23701.7313080711. The cubic root of 561772067 is about 825.1255723153.

The spelling of 561772067 in words is "five hundred sixty-one million, seven hundred seventy-two thousand, sixty-seven".