366336661 has 2 divisors, whose sum is σ = 366336662. Its totient is φ = 366336660.

The previous prime is 366336647. The next prime is 366336673. The reversal of 366336661 is 166633663.

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., 222576561 + 143760100 = 14919^2 + 11990^2 .

It is a cyclic number.

It is not a de Polignac number, because 366336661 - 2¹⁵ = 366303893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (366336601) 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, 183168330 + 183168331.

It is an arithmetic number, because the mean of its divisors is an integer number (183168331).

Almost surely, 2^366336661 is an apocalyptic number.

It is an amenable number.

366336661 is a deficient number, since it is larger than the sum of its proper divisors (1).

366336661 is an equidigital number, since it uses as much as digits as its factorization.

366336661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 40.

The square root of 366336661 is about 19139.9232234615. The cubic root of 366336661 is about 715.5282652843.

The spelling of 366336661 in words is "three hundred sixty-six million, three hundred thirty-six thousand, six hundred sixty-one".