997798 has 8 divisors (see below), whose sum is σ = 1584792. Its totient is φ = 469536.
The previous prime is 997793. The next prime is 997807. The reversal of 997798 is 897799.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (997793) 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, 14640 + ... + 14707.
It is an arithmetic number, because the mean of its divisors is an integer number (198099).
2997798 is an apocalyptic number.
997798 is a deficient number, since it is larger than the sum of its proper divisors (586994).
997798 is a wasteful number, since it uses less digits than its factorization.
997798 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 29366.
The product of its digits is 285768, while the sum is 49.
The square root of 997798 is about 998.8983932313. The cubic root of 997798 is about 99.9265460584.
Subtracting from 997798 its reverse (897799), we obtain a palindrome (99999).
The spelling of 997798 in words is "nine hundred ninety-seven thousand, seven hundred ninety-eight".
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