104220689 has 2 divisors, whose sum is σ = 104220690. Its totient is φ = 104220688.

The previous prime is 104220679. The next prime is 104220731. The reversal of 104220689 is 986022401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103632400 + 588289 = 10180^2 + 767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104220689 is a prime.

It is not a weakly prime, because it can be changed into another prime (104220629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52110344 + 52110345.

It is an arithmetic number, because the mean of its divisors is an integer number (52110345).

Almost surely, 2^104220689 is an apocalyptic number.

It is an amenable number.

104220689 is a deficient number, since it is larger than the sum of its proper divisors (1).

104220689 is an equidigital number, since it uses as much as digits as its factorization.

104220689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 104220689 is about 10208.8534615793. The cubic root of 104220689 is about 470.5993395226.

The spelling of 104220689 in words is "one hundred four million, two hundred twenty thousand, six hundred eighty-nine".