997584 has 40 divisors (see below), whose sum is σ = 2946240. Its totient is φ = 284928.

The previous prime is 997583. The next prime is 997589. The reversal of 997584 is 485799.

997584 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 997584.

It is not an unprimeable number, because it can be changed into a prime (997583) 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, 1149 + ... + 1820.

It is an arithmetic number, because the mean of its divisors is an integer number (73656).

2⁹⁹⁷⁵⁸⁴ is an apocalyptic number.

It is an amenable number.

997584 is an abundant number, since it is smaller than the sum of its proper divisors (1948656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997584 is a wasteful number, since it uses less digits than its factorization.

997584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987 (or 2981 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 997584 is about 998.7912694853. The cubic root of 997584 is about 99.9194017233.

The spelling of 997584 in words is "nine hundred ninety-seven thousand, five hundred eighty-four".