10197997 has 2 divisors, whose sum is σ = 10197998. Its totient is φ = 10197996.

The previous prime is 10197989. The next prime is 10198021. The reversal of 10197997 is 79979101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6081156 + 4116841 = 2466^2 + 2029^2 .

It is a cyclic number.

It is not a de Polignac number, because 10197997 - 2³ = 10197989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10197907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5098998 + 5098999.

It is an arithmetic number, because the mean of its divisors is an integer number (5098999).

Almost surely, 2^10197997 is an apocalyptic number.

It is an amenable number.

10197997 is a deficient number, since it is larger than the sum of its proper divisors (1).

10197997 is an equidigital number, since it uses as much as digits as its factorization.

10197997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35721, while the sum is 43.

The square root of 10197997 is about 3193.4302873243. The cubic root of 10197997 is about 216.8560918052.

The spelling of 10197997 in words is "ten million, one hundred ninety-seven thousand, nine hundred ninety-seven".