1997267 has 2 divisors, whose sum is σ = 1997268. Its totient is φ = 1997266.

The previous prime is 1997257. The next prime is 1997269. The reversal of 1997267 is 7627991.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1997267 is a prime.

Together with 1997269, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1997269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998633 + 998634.

It is an arithmetic number, because the mean of its divisors is an integer number (998634).

2^1997267 is an apocalyptic number.

1997267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1997267 is an equidigital number, since it uses as much as digits as its factorization.

1997267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 41.

The square root of 1997267 is about 1413.2469706318. The cubic root of 1997267 is about 125.9346894249.

The spelling of 1997267 in words is "one million, nine hundred ninety-seven thousand, two hundred sixty-seven".