6191897 has 2 divisors, whose sum is σ = 6191898. Its totient is φ = 6191896.

The previous prime is 6191849. The next prime is 6191903. The reversal of 6191897 is 7981916.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4713241 + 1478656 = 2171^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 6191897 - 2⁶ = 6191833 is a prime.

It is not a weakly prime, because it can be changed into another prime (6191837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3095948 + 3095949.

It is an arithmetic number, because the mean of its divisors is an integer number (3095949).

Almost surely, 2^6191897 is an apocalyptic number.

It is an amenable number.

6191897 is a deficient number, since it is larger than the sum of its proper divisors (1).

6191897 is an equidigital number, since it uses as much as digits as its factorization.

6191897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 41.

The square root of 6191897 is about 2488.3522660588. The cubic root of 6191897 is about 183.6289881497.

The spelling of 6191897 in words is "six million, one hundred ninety-one thousand, eight hundred ninety-seven".