997745175 has 96 divisors (see below), whose sum is σ = 2186050560. Its totient is φ = 436233600.

The previous prime is 997745171. The next prime is 997745183. The reversal of 997745175 is 571547799.

It is a happy number.

It is not a de Polignac number, because 997745175 - 2² = 997745171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997745171) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 104085 + ... + 113265.

It is an arithmetic number, because the mean of its divisors is an integer number (22771360).

Almost surely, 2^997745175 is an apocalyptic number.

997745175 is an abundant number, since it is smaller than the sum of its proper divisors (1188305385).

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

997745175 is a wasteful number, since it uses less digits than its factorization.

997745175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9230 (or 9219 counting only the distinct ones).

The product of its digits is 2778300, while the sum is 54.

The square root of 997745175 is about 31587.1045681620. The cubic root of 997745175 is about 999.2478260429.

The spelling of 997745175 in words is "nine hundred ninety-seven million, seven hundred forty-five thousand, one hundred seventy-five".