5678779 has 2 divisors, whose sum is σ = 5678780. Its totient is φ = 5678778.

The previous prime is 5678773. The next prime is 5678789. The reversal of 5678779 is 9778765.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5678779 is a prime.

It is a Chen prime.

5678779 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5678773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2839389 + 2839390.

It is an arithmetic number, because the mean of its divisors is an integer number (2839390).

Almost surely, 2^5678779 is an apocalyptic number.

5678779 is a deficient number, since it is larger than the sum of its proper divisors (1).

5678779 is an equidigital number, since it uses as much as digits as its factorization.

5678779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 740880, while the sum is 49.

The square root of 5678779 is about 2383.0188836851. The cubic root of 5678779 is about 178.4096423264.

The spelling of 5678779 in words is "five million, six hundred seventy-eight thousand, seven hundred seventy-nine".