647343373 has 2 divisors, whose sum is σ = 647343374. Its totient is φ = 647343372.

The previous prime is 647343343. The next prime is 647343377. The reversal of 647343373 is 373343746.

647343373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462981289 + 184362084 = 21517^2 + 13578^2 .

It is a cyclic number.

It is not a de Polignac number, because 647343373 - 2²⁵ = 613788941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647343377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323671686 + 323671687.

It is an arithmetic number, because the mean of its divisors is an integer number (323671687).

Almost surely, 2^647343373 is an apocalyptic number.

It is an amenable number.

647343373 is a deficient number, since it is larger than the sum of its proper divisors (1).

647343373 is an equidigital number, since it uses as much as digits as its factorization.

647343373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 40.

The square root of 647343373 is about 25442.9434814449. The cubic root of 647343373 is about 865.0573532756.

It can be divided in two parts, 64 and 7343373, that added together give a palindrome (7343437).

The spelling of 647343373 in words is "six hundred forty-seven million, three hundred forty-three thousand, three hundred seventy-three".