997283 has 4 divisors (see below), whose sum is σ = 1139760. Its totient is φ = 854808.

The previous prime is 997279. The next prime is 997307. The reversal of 997283 is 382799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382799 = 313 ⋅1223.

It is a cyclic number.

It is not a de Polignac number, because 997283 - 2² = 997279 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997273) 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, 71228 + ... + 71241.

It is an arithmetic number, because the mean of its divisors is an integer number (284940).

2⁹⁹⁷²⁸³ is an apocalyptic number.

997283 is a deficient number, since it is larger than the sum of its proper divisors (142477).

997283 is a wasteful number, since it uses less digits than its factorization.

997283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142476.

The product of its digits is 27216, while the sum is 38.

The square root of 997283 is about 998.6405759832. The cubic root of 997283 is about 99.9093511861.

The spelling of 997283 in words is "nine hundred ninety-seven thousand, two hundred eighty-three".