1997283 has 4 divisors (see below), whose sum is σ = 2663048. Its totient is φ = 1331520.

The previous prime is 1997269. The next prime is 1997293. The reversal of 1997283 is 3827991.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1997283 - 2⁴ = 1997267 is a prime.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1997213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332878 + ... + 332883.

It is an arithmetic number, because the mean of its divisors is an integer number (665762).

2^1997283 is an apocalyptic number.

1997283 is a deficient number, since it is larger than the sum of its proper divisors (665765).

1997283 is an equidigital number, since it uses as much as digits as its factorization.

1997283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665764.

The product of its digits is 27216, while the sum is 39.

The square root of 1997283 is about 1413.2526313437. The cubic root of 1997283 is about 125.9350257094.

The spelling of 1997283 in words is "one million, nine hundred ninety-seven thousand, two hundred eighty-three".