997127 has 4 divisors (see below), whose sum is σ = 1020360. Its totient is φ = 973896.

The previous prime is 997123. The next prime is 997141. The reversal of 997127 is 721799.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 997127 - 2² = 997123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 997127.

It is not an unprimeable number, because it can be changed into a prime (997121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11552 + ... + 11637.

It is an arithmetic number, because the mean of its divisors is an integer number (255090).

2⁹⁹⁷¹²⁷ is an apocalyptic number.

997127 is a deficient number, since it is larger than the sum of its proper divisors (23233).

997127 is a wasteful number, since it uses less digits than its factorization.

997127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23232.

The product of its digits is 7938, while the sum is 35.

The square root of 997127 is about 998.5624667491. The cubic root of 997127 is about 99.9041414741.

The spelling of 997127 in words is "nine hundred ninety-seven thousand, one hundred twenty-seven".