65897 has 8 divisors (see below), whose sum is σ = 73416. Its totient is φ = 58752.

The previous prime is 65881. The next prime is 65899. The reversal of 65897 is 79856.

It can be written as a sum of positive squares in 4 ways, for example, as 13456 + 52441 = 116^2 + 229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65897 - 2⁴ = 65881 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 65897.

It is not an unprimeable number, because it can be changed into a prime (65899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413 + ... + 549.

It is an arithmetic number, because the mean of its divisors is an integer number (9177).

2⁶⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

65897 is a deficient number, since it is larger than the sum of its proper divisors (7519).

65897 is a wasteful number, since it uses less digits than its factorization.

65897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187.

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

The square root of 65897 is about 256.7041098230. The cubic root of 65897 is about 40.3913666485.

The spelling of 65897 in words is "sixty-five thousand, eight hundred ninety-seven".