1997733 has 8 divisors (see below), whose sum is σ = 2749696. Its totient is φ = 1288800.

The previous prime is 1997731. The next prime is 1997747. The reversal of 1997733 is 3377991.

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

It is not a de Polignac number, because 1997733 - 2¹ = 1997731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1997691 and 1997700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10648 + ... + 10833.

It is an arithmetic number, because the mean of its divisors is an integer number (343712).

2^1997733 is an apocalyptic number.

It is an amenable number.

1997733 is a deficient number, since it is larger than the sum of its proper divisors (751963).

1997733 is a wasteful number, since it uses less digits than its factorization.

1997733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21515.

The product of its digits is 35721, while the sum is 39.

The square root of 1997733 is about 1413.4118295812. The cubic root of 1997733 is about 125.9444829748.

The spelling of 1997733 in words is "one million, nine hundred ninety-seven thousand, seven hundred thirty-three".