10306661 has 2 divisors, whose sum is σ = 10306662. Its totient is φ = 10306660.

The previous prime is 10306657. The next prime is 10306669. The reversal of 10306661 is 16660301.

10306661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8940100 + 1366561 = 2990^2 + 1169^2 .

It is a cyclic number.

It is not a de Polignac number, because 10306661 - 2² = 10306657 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10306669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5153330 + 5153331.

It is an arithmetic number, because the mean of its divisors is an integer number (5153331).

Almost surely, 2^10306661 is an apocalyptic number.

It is an amenable number.

10306661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10306661 is an equidigital number, since it uses as much as digits as its factorization.

10306661 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 10306661 is about 3210.3988848740. The cubic root of 10306661 is about 217.6236035008.

Adding to 10306661 its reverse (16660301), we get a palindrome (26966962).

The spelling of 10306661 in words is "ten million, three hundred six thousand, six hundred sixty-one".