6397121 has 2 divisors, whose sum is σ = 6397122. Its totient is φ = 6397120.

The previous prime is 6397109. The next prime is 6397133. The reversal of 6397121 is 1217936.

It is a balanced prime because it is at equal distance from previous prime (6397109) and next prime (6397133).

It can be written as a sum of positive squares in only one way, i.e., 4326400 + 2070721 = 2080^2 + 1439^2 .

It is a cyclic number.

It is not a de Polignac number, because 6397121 - 2⁶ = 6397057 is a prime.

It is not a weakly prime, because it can be changed into another prime (6397421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3198560 + 3198561.

It is an arithmetic number, because the mean of its divisors is an integer number (3198561).

Almost surely, 2^6397121 is an apocalyptic number.

It is an amenable number.

6397121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6397121 is an equidigital number, since it uses as much as digits as its factorization.

6397121 is an evil number, because the sum of its binary digits is even.

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

The square root of 6397121 is about 2529.2530517922. The cubic root of 6397121 is about 185.6357093059.

The spelling of 6397121 in words is "six million, three hundred ninety-seven thousand, one hundred twenty-one".