97897 has 4 divisors (see below), whose sum is σ = 98560. Its totient is φ = 97236.

The previous prime is 97883. The next prime is 97919. The reversal of 97897 is 79879.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 97897 - 2¹⁵ = 65129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4 + ... + 442.

It is an arithmetic number, because the mean of its divisors is an integer number (24640).

2⁹⁷⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

97897 is a deficient number, since it is larger than the sum of its proper divisors (663).

97897 is a wasteful number, since it uses less digits than its factorization.

97897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its digits is 31752, while the sum is 40.

The square root of 97897 is about 312.8849628857. The cubic root of 97897 is about 46.0882050497.

The spelling of 97897 in words is "ninety-seven thousand, eight hundred ninety-seven".