997347 has 16 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 605472.

The previous prime is 997343. The next prime is 997357. The reversal of 997347 is 743799.

It is not a de Polignac number, because 997347 - 2² = 997343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (997343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4054 + ... + 4292.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2⁹⁹⁷³⁴⁷ is an apocalyptic number.

997347 is a deficient number, since it is larger than the sum of its proper divisors (454173).

997347 is a wasteful number, since it uses less digits than its factorization.

997347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362.

The product of its digits is 47628, while the sum is 39.

The square root of 997347 is about 998.6726190299. The cubic root of 997347 is about 99.9114883467.

The spelling of 997347 in words is "nine hundred ninety-seven thousand, three hundred forty-seven".