6211397 has 2 divisors, whose sum is σ = 6211398. Its totient is φ = 6211396.

The previous prime is 6211367. The next prime is 6211421. The reversal of 6211397 is 7931126.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4879681 + 1331716 = 2209^2 + 1154^2 .

It is a cyclic number.

It is not a de Polignac number, because 6211397 - 2¹² = 6207301 is a prime.

It is equal to p₄₂₆₃₇₇ and since 6211397 and 426377 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 (6211367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3105698 + 3105699.

It is an arithmetic number, because the mean of its divisors is an integer number (3105699).

Almost surely, 2^6211397 is an apocalyptic number.

It is an amenable number.

6211397 is a deficient number, since it is larger than the sum of its proper divisors (1).

6211397 is an equidigital number, since it uses as much as digits as its factorization.

6211397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 6211397 is about 2492.2674415078. The cubic root of 6211397 is about 183.8215523396.

The spelling of 6211397 in words is "six million, two hundred eleven thousand, three hundred ninety-seven".