997071 has 8 divisors (see below), whose sum is σ = 1338240. Its totient is φ = 660312.

The previous prime is 997069. The next prime is 997081. The reversal of 997071 is 170799.

997071 is nontrivially palindromic in base 2.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 997071 - 2¹ = 997069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531 + ... + 1508.

It is an arithmetic number, because the mean of its divisors is an integer number (167280).

2⁹⁹⁷⁰⁷¹ is an apocalyptic number.

997071 is a deficient number, since it is larger than the sum of its proper divisors (341169).

997071 is a wasteful number, since it uses less digits than its factorization.

997071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205.

The product of its (nonzero) digits is 3969, while the sum is 33.

The square root of 997071 is about 998.5344260465. The cubic root of 997071 is about 99.9022711886.

The spelling of 997071 in words is "nine hundred ninety-seven thousand, seventy-one".