422656679 has 2 divisors, whose sum is σ = 422656680. Its totient is φ = 422656678.

The previous prime is 422656657. The next prime is 422656687. The reversal of 422656679 is 976656224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422656679 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422656649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211328339 + 211328340.

It is an arithmetic number, because the mean of its divisors is an integer number (211328340).

Almost surely, 2^422656679 is an apocalyptic number.

422656679 is a deficient number, since it is larger than the sum of its proper divisors (1).

422656679 is an equidigital number, since it uses as much as digits as its factorization.

422656679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 47.

The square root of 422656679 is about 20558.6156878327. The cubic root of 422656679 is about 750.4629313858.

The spelling of 422656679 in words is "four hundred twenty-two million, six hundred fifty-six thousand, six hundred seventy-nine".