997207 has 2 divisors, whose sum is σ = 997208. Its totient is φ = 997206.

The previous prime is 997201. The next prime is 997219. The reversal of 997207 is 702799.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498603 + 498604.

It is an arithmetic number, because the mean of its divisors is an integer number (498604).

2⁹⁹⁷²⁰⁷ is an apocalyptic number.

997207 is a deficient number, since it is larger than the sum of its proper divisors (1).

997207 is an equidigital number, since it uses as much as digits as its factorization.

997207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 997207 is about 998.6025235298. The cubic root of 997207 is about 99.9068131892.

The spelling of 997207 in words is "nine hundred ninety-seven thousand, two hundred seven".