997936 has 20 divisors (see below), whose sum is σ = 1956472. Its totient is φ = 493056.

The previous prime is 997933. The next prime is 997949. The reversal of 997936 is 639799.

997936 is nontrivially palindromic in base 15.

997936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 997892 and 997901.

It is not an unprimeable number, because it can be changed into a prime (997933) 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, 1231 + ... + 1873.

2⁹⁹⁷⁹³⁶ is an apocalyptic number.

It is an amenable number.

997936 is a deficient number, since it is larger than the sum of its proper divisors (958536).

997936 is a wasteful number, since it uses less digits than its factorization.

997936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 742 counting only the distinct ones).

The product of its digits is 91854, while the sum is 43.

The square root of 997936 is about 998.9674669377. The cubic root of 997936 is about 99.9311526112.

It can be divided in two parts, 99793 and 6, that added together give a palindrome (99799).

The spelling of 997936 in words is "nine hundred ninety-seven thousand, nine hundred thirty-six".