679862243 has 2 divisors, whose sum is σ = 679862244. Its totient is φ = 679862242.

The previous prime is 679862219. The next prime is 679862297. The reversal of 679862243 is 342268976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 679862243 - 2¹² = 679858147 is a prime.

It is not a weakly prime, because it can be changed into another prime (679865243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339931121 + 339931122.

It is an arithmetic number, because the mean of its divisors is an integer number (339931122).

Almost surely, 2^679862243 is an apocalyptic number.

679862243 is a deficient number, since it is larger than the sum of its proper divisors (1).

679862243 is an equidigital number, since it uses as much as digits as its factorization.

679862243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 47.

The square root of 679862243 is about 26074.1681171231. The cubic root of 679862243 is about 879.3065486502.

The spelling of 679862243 in words is "six hundred seventy-nine million, eight hundred sixty-two thousand, two hundred forty-three".