997210 has 8 divisors (see below), whose sum is σ = 1794996. Its totient is φ = 398880.

The previous prime is 997207. The next prime is 997219. The reversal of 997210 is 12799.

It can be written as a sum of positive squares in 2 ways, for example, as 982081 + 15129 = 991^2 + 123^2 .

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

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (997219) 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, 49851 + ... + 49870.

2⁹⁹⁷²¹⁰ is an apocalyptic number.

997210 is a deficient number, since it is larger than the sum of its proper divisors (797786).

997210 is a wasteful number, since it uses less digits than its factorization.

997210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99728.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 997210 is about 998.6040256278. The cubic root of 997210 is about 99.9069133757.

The spelling of 997210 in words is "nine hundred ninety-seven thousand, two hundred ten".