366394681 has 2 divisors, whose sum is σ = 366394682. Its totient is φ = 366394680.

The previous prime is 366394649. The next prime is 366394741. The reversal of 366394681 is 186493663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237776400 + 128618281 = 15420^2 + 11341^2 .

It is a cyclic number.

It is not a de Polignac number, because 366394681 - 2⁵ = 366394649 is a prime.

It is a super-3 number, since 3×366394681³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (366394781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183197340 + 183197341.

It is an arithmetic number, because the mean of its divisors is an integer number (183197341).

Almost surely, 2^366394681 is an apocalyptic number.

It is an amenable number.

366394681 is a deficient number, since it is larger than the sum of its proper divisors (1).

366394681 is an equidigital number, since it uses as much as digits as its factorization.

366394681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 46.

The square root of 366394681 is about 19141.4388435144. The cubic root of 366394681 is about 715.5660381517.

The spelling of 366394681 in words is "three hundred sixty-six million, three hundred ninety-four thousand, six hundred eighty-one".