647343343 has 2 divisors, whose sum is σ = 647343344. Its totient is φ = 647343342.

The previous prime is 647343331. The next prime is 647343373. The reversal of 647343343 is 343343746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647343343 - 2¹⁷ = 647212271 is a prime.

It is equal to p_33662449 and since 647343343 and 33662449 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647343373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323671671 + 323671672.

It is an arithmetic number, because the mean of its divisors is an integer number (323671672).

Almost surely, 2^647343343 is an apocalyptic number.

647343343 is a deficient number, since it is larger than the sum of its proper divisors (1).

647343343 is an equidigital number, since it uses as much as digits as its factorization.

647343343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 37.

The square root of 647343343 is about 25442.9428918905. The cubic root of 647343343 is about 865.0573399124.

The spelling of 647343343 in words is "six hundred forty-seven million, three hundred forty-three thousand, three hundred forty-three".