997330 has 8 divisors (see below), whose sum is σ = 1795212. Its totient is φ = 398928.

The previous prime is 997327. The next prime is 997333. The reversal of 997330 is 33799.

It is an interprime number because it is at equal distance from previous prime (997327) and next prime (997333).

It can be written as a sum of positive squares in 2 ways, for example, as 962361 + 34969 = 981^2 + 187^2 .

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

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 997292 and 997301.

It is not an unprimeable number, because it can be changed into a prime (997333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49857 + ... + 49876.

2⁹⁹⁷³³⁰ is an apocalyptic number.

997330 is a deficient number, since it is larger than the sum of its proper divisors (797882).

997330 is a wasteful number, since it uses less digits than its factorization.

997330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99740.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 997330 is about 998.6641076959. The cubic root of 997330 is about 99.9109206723.

The spelling of 997330 in words is "nine hundred ninety-seven thousand, three hundred thirty".