3061661 has 2 divisors, whose sum is σ = 3061662. Its totient is φ = 3061660.

The previous prime is 3061637. The next prime is 3061673. The reversal of 3061661 is 1661603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2805625 + 256036 = 1675^2 + 506^2 .

It is a cyclic number.

It is not a de Polignac number, because 3061661 - 2¹⁰ = 3060637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3061631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1530830 + 1530831.

It is an arithmetic number, because the mean of its divisors is an integer number (1530831).

Almost surely, 2^3061661 is an apocalyptic number.

It is an amenable number.

3061661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3061661 is an equidigital number, since it uses as much as digits as its factorization.

3061661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 3061661 is about 1749.7602692941. The cubic root of 3061661 is about 145.2063807096.

The spelling of 3061661 in words is "three million, sixty-one thousand, six hundred sixty-one".