1358689 has 2 divisors, whose sum is σ = 1358690. Its totient is φ = 1358688.

The previous prime is 1358647. The next prime is 1358701. The reversal of 1358689 is 9868531.

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., 1067089 + 291600 = 1033^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 1358689 - 2⁷ = 1358561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1358639) 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, 679344 + 679345.

It is an arithmetic number, because the mean of its divisors is an integer number (679345).

2^1358689 is an apocalyptic number.

It is an amenable number.

1358689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1358689 is an equidigital number, since it uses as much as digits as its factorization.

1358689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 40.

The square root of 1358689 is about 1165.6281568322. The cubic root of 1358689 is about 110.7575532388.

The spelling of 1358689 in words is "one million, three hundred fifty-eight thousand, six hundred eighty-nine".