97865 has 12 divisors (see below), whose sum is σ = 126084. Its totient is φ = 72864.

The previous prime is 97861. The next prime is 97871. The reversal of 97865 is 56879.

It can be written as a sum of positive squares in 2 ways, for example, as 64009 + 33856 = 253^2 + 184^2 .

It is not a de Polignac number, because 97865 - 2² = 97861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2627 + ... + 2663.

It is an arithmetic number, because the mean of its divisors is an integer number (10507).

2⁹⁷⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

97865 is a deficient number, since it is larger than the sum of its proper divisors (28219).

97865 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 97865 = (67589)₁₁.

97865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 65 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 97865 is about 312.8338217009. The cubic root of 97865 is about 46.0831828213.

The spelling of 97865 in words is "ninety-seven thousand, eight hundred sixty-five".