6423257 has 2 divisors, whose sum is σ = 6423258. Its totient is φ = 6423256.

The previous prime is 6423247. The next prime is 6423269. The reversal of 6423257 is 7523246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6130576 + 292681 = 2476^2 + 541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6423257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6423217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3211628 + 3211629.

It is an arithmetic number, because the mean of its divisors is an integer number (3211629).

Almost surely, 2^6423257 is an apocalyptic number.

It is an amenable number.

6423257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6423257 is an equidigital number, since it uses as much as digits as its factorization.

6423257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 29.

The square root of 6423257 is about 2534.4145280518. The cubic root of 6423257 is about 185.8881761268. Note that the first 3 decimals are identical.

The spelling of 6423257 in words is "six million, four hundred twenty-three thousand, two hundred fifty-seven".