7197397 has 2 divisors, whose sum is σ = 7197398. Its totient is φ = 7197396.

The previous prime is 7197391. The next prime is 7197401. The reversal of 7197397 is 7937917.

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., 5574321 + 1623076 = 2361^2 + 1274^2 .

It is a cyclic number.

It is not a de Polignac number, because 7197397 - 2³ = 7197389 is a prime.

7197397 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7197391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3598698 + 3598699.

It is an arithmetic number, because the mean of its divisors is an integer number (3598699).

Almost surely, 2^7197397 is an apocalyptic number.

It is an amenable number.

7197397 is a deficient number, since it is larger than the sum of its proper divisors (1).

7197397 is an equidigital number, since it uses as much as digits as its factorization.

7197397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83349, while the sum is 43.

The square root of 7197397 is about 2682.7964887408. The cubic root of 7197397 is about 193.0746040342.

The spelling of 7197397 in words is "seven million, one hundred ninety-seven thousand, three hundred ninety-seven".