997104 has 20 divisors (see below), whose sum is σ = 2575976. Its totient is φ = 332352.

The previous prime is 997103. The next prime is 997109. The reversal of 997104 is 401799.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997103) 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, 10339 + ... + 10434.

2⁹⁹⁷¹⁰⁴ is an apocalyptic number.

It is an amenable number.

997104 is an abundant number, since it is smaller than the sum of its proper divisors (1578872).

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

997104 is a wasteful number, since it uses less digits than its factorization.

997104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20784 (or 20778 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 997104 is about 998.5509501272. The cubic root of 997104 is about 99.9033733296.

The spelling of 997104 in words is "nine hundred ninety-seven thousand, one hundred four".