368689 has 2 divisors, whose sum is σ = 368690. Its totient is φ = 368688.

The previous prime is 368653. The next prime is 368717. The reversal of 368689 is 986863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350464 + 18225 = 592^2 + 135^2 .

It is a cyclic number.

It is not a de Polignac number, because 368689 - 2¹³ = 360497 is a prime.

368689 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (368609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184344 + 184345.

It is an arithmetic number, because the mean of its divisors is an integer number (184345).

2³⁶⁸⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

368689 is a deficient number, since it is larger than the sum of its proper divisors (1).

368689 is an equidigital number, since it uses as much as digits as its factorization.

368689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 368689 is about 607.1976613921. The cubic root of 368689 is about 71.7056527259.

The spelling of 368689 in words is "three hundred sixty-eight thousand, six hundred eighty-nine".