4685561 has 2 divisors, whose sum is σ = 4685562. Its totient is φ = 4685560.

The previous prime is 4685539. The next prime is 4685567. The reversal of 4685561 is 1655864.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4541161 + 144400 = 2131^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 4685561 - 2⁶ = 4685497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4685567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2342780 + 2342781.

It is an arithmetic number, because the mean of its divisors is an integer number (2342781).

Almost surely, 2^4685561 is an apocalyptic number.

It is an amenable number.

4685561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4685561 is an equidigital number, since it uses as much as digits as its factorization.

4685561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The square root of 4685561 is about 2164.6156702750. The cubic root of 4685561 is about 167.3351582404.

The spelling of 4685561 in words is "four million, six hundred eighty-five thousand, five hundred sixty-one".