689877343 has 2 divisors, whose sum is σ = 689877344. Its totient is φ = 689877342.

The previous prime is 689877283. The next prime is 689877389. The reversal of 689877343 is 343778986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689877343 - 2²⁵ = 656322911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629877343) 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, 344938671 + 344938672.

It is an arithmetic number, because the mean of its divisors is an integer number (344938672).

Almost surely, 2^689877343 is an apocalyptic number.

689877343 is a deficient number, since it is larger than the sum of its proper divisors (1).

689877343 is an equidigital number, since it uses as much as digits as its factorization.

689877343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 55.

The square root of 689877343 is about 26265.5162332668. The cubic root of 689877343 is about 883.6032284882.

The spelling of 689877343 in words is "six hundred eighty-nine million, eight hundred seventy-seven thousand, three hundred forty-three".