1705469561 has 2 divisors, whose sum is σ = 1705469562. Its totient is φ = 1705469560.

The previous prime is 1705469551. The next prime is 1705469567. The reversal of 1705469561 is 1659645071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1313627536 + 391842025 = 36244^2 + 19795^2 .

It is a cyclic number.

It is not a de Polignac number, because 1705469561 - 2¹⁴ = 1705453177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1705469567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852734780 + 852734781.

It is an arithmetic number, because the mean of its divisors is an integer number (852734781).

Almost surely, 2^1705469561 is an apocalyptic number.

It is an amenable number.

1705469561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1705469561 is an equidigital number, since it uses as much as digits as its factorization.

1705469561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 1705469561 is about 41297.3311607421. The cubic root of 1705469561 is about 1194.7617881534.

The spelling of 1705469561 in words is "one billion, seven hundred five million, four hundred sixty-nine thousand, five hundred sixty-one".