97997 has 6 divisors (see below), whose sum is σ = 102222. Its totient is φ = 93912.
The previous prime is 97987. The next prime is 98009. The reversal of 97997 is 79979.
It can be written as a sum of positive squares in only one way, i.e., 90601 + 7396 = 301^2 + 86^2 .
It is not a de Polignac number, because 97997 - 210 = 96973 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (97927) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1823 + ... + 1875.
It is an arithmetic number, because the mean of its divisors is an integer number (17037).
297997 is an apocalyptic number.
It is an amenable number.
97997 is a deficient number, since it is larger than the sum of its proper divisors (4225).
97997 is an equidigital number, since it uses as much as digits as its factorization.
97997 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 139 (or 96 counting only the distinct ones).
The product of its digits is 35721, while the sum is 41.
The square root of 97997 is about 313.0447252391. The cubic root of 97997 is about 46.1038924631.
The spelling of 97997 in words is "ninety-seven thousand, nine hundred ninety-seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •