997047 has 12 divisors (see below), whose sum is σ = 1452360. Its totient is φ = 659088.

The previous prime is 997043. The next prime is 997057. The reversal of 997047 is 740799.

It is not a de Polignac number, because 997047 - 2² = 997043 is a prime.

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 997047.

It is not an unprimeable number, because it can be changed into a prime (997043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 853 + ... + 1649.

It is an arithmetic number, because the mean of its divisors is an integer number (121030).

2⁹⁹⁷⁰⁴⁷ is an apocalyptic number.

997047 is a deficient number, since it is larger than the sum of its proper divisors (455313).

997047 is a wasteful number, since it uses less digits than its factorization.

997047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 997047 is about 998.5224083615. The cubic root of 997047 is about 99.9014696162.

The spelling of 997047 in words is "nine hundred ninety-seven thousand, forty-seven".