5678789 has 2 divisors, whose sum is σ = 5678790. Its totient is φ = 5678788.

The previous prime is 5678779. The next prime is 5678807. The reversal of 5678789 is 9878765.

It is a happy number.

5678789 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5678689 + 100 = 2383^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 5678789 - 2⁴ = 5678773 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5678779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2839394 + 2839395.

It is an arithmetic number, because the mean of its divisors is an integer number (2839395).

Almost surely, 2^5678789 is an apocalyptic number.

It is an amenable number.

5678789 is a deficient number, since it is larger than the sum of its proper divisors (1).

5678789 is an equidigital number, since it uses as much as digits as its factorization.

5678789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 50.

The square root of 5678789 is about 2383.0209818631. The cubic root of 5678789 is about 178.4097470493.

The spelling of 5678789 in words is "five million, six hundred seventy-eight thousand, seven hundred eighty-nine".