6421073 has 2 divisors, whose sum is σ = 6421074. Its totient is φ = 6421072.

The previous prime is 6421067. The next prime is 6421099. The reversal of 6421073 is 3701246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6385729 + 35344 = 2527^2 + 188^2 .

It is a cyclic number.

It is not a de Polignac number, because 6421073 - 2¹⁴ = 6404689 is a prime.

It is not a weakly prime, because it can be changed into another prime (6421013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210536 + 3210537.

It is an arithmetic number, because the mean of its divisors is an integer number (3210537).

Almost surely, 2^6421073 is an apocalyptic number.

It is an amenable number.

6421073 is a deficient number, since it is larger than the sum of its proper divisors (1).

6421073 is an equidigital number, since it uses as much as digits as its factorization.

6421073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 6421073 is about 2533.9836226779. The cubic root of 6421073 is about 185.8671055184.

The spelling of 6421073 in words is "six million, four hundred twenty-one thousand, seventy-three".