997326 has 64 divisors (see below), whose sum is σ = 2557440. Its totient is φ = 285120.

The previous prime is 997319. The next prime is 997327. The reversal of 997326 is 623799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13626 + ... + 13698.

It is an arithmetic number, because the mean of its divisors is an integer number (39960).

2⁹⁹⁷³²⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1278720).

997326 is an abundant number, since it is smaller than the sum of its proper divisors (1560114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997326 is a wasteful number, since it uses less digits than its factorization.

997326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 112 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 997326 is about 998.6621050185. The cubic root of 997326 is about 99.9107871009.

It can be divided in two parts, 9973 and 26, that added together give a palindrome (9999).

The spelling of 997326 in words is "nine hundred ninety-seven thousand, three hundred twenty-six".