997733 has 4 divisors (see below), whose sum is σ = 1088448. Its totient is φ = 907020.

The previous prime is 997727. The next prime is 997739. The reversal of 997733 is 337799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (997727) and next prime (997739).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997733 is a prime.

It is a super-2 number, since 2×997733² = 1990942278578, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 997733.

It is not an unprimeable number, because it can be changed into a prime (997739) 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, 45341 + ... + 45362.

It is an arithmetic number, because the mean of its divisors is an integer number (272112).

2⁹⁹⁷⁷³³ is an apocalyptic number.

It is an amenable number.

997733 is a deficient number, since it is larger than the sum of its proper divisors (90715).

997733 is a wasteful number, since it uses less digits than its factorization.

997733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90714.

The product of its digits is 35721, while the sum is 38.

The square root of 997733 is about 998.8658568597. The cubic root of 997733 is about 99.9243761581.

It can be divided in two parts, 99 and 7733, that multiplied together give a palindrome (765567).

The spelling of 997733 in words is "nine hundred ninety-seven thousand, seven hundred thirty-three".