6428197 has 2 divisors, whose sum is σ = 6428198. Its totient is φ = 6428196.

The previous prime is 6428189. The next prime is 6428207. The reversal of 6428197 is 7918246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4669921 + 1758276 = 2161^2 + 1326^2 .

It is a cyclic number.

It is not a de Polignac number, because 6428197 - 2³ = 6428189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6428117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214098 + 3214099.

It is an arithmetic number, because the mean of its divisors is an integer number (3214099).

Almost surely, 2^6428197 is an apocalyptic number.

It is an amenable number.

6428197 is a deficient number, since it is larger than the sum of its proper divisors (1).

6428197 is an equidigital number, since it uses as much as digits as its factorization.

6428197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 6428197 is about 2535.3889248003. The cubic root of 6428197 is about 185.9358182227.

The spelling of 6428197 in words is "six million, four hundred twenty-eight thousand, one hundred ninety-seven".