65823197 has 4 divisors (see below), whose sum is σ = 71807136. Its totient is φ = 59839260.

The previous prime is 65823187. The next prime is 65823223. The reversal of 65823197 is 79132856.

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.

It is a cyclic number.

It is not a de Polignac number, because 65823197 - 2¹⁰ = 65822173 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 (65823187) 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, 2991953 + ... + 2991974.

It is an arithmetic number, because the mean of its divisors is an integer number (17951784).

Almost surely, 2^65823197 is an apocalyptic number.

It is an amenable number.

65823197 is a deficient number, since it is larger than the sum of its proper divisors (5983939).

65823197 is a wasteful number, since it uses less digits than its factorization.

65823197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5983938.

The product of its digits is 90720, while the sum is 41.

The square root of 65823197 is about 8113.1496350061. The cubic root of 65823197 is about 403.7628190711.

It can be divided in two parts, 6582 and 3197, that added together give a palindrome (9779).

The spelling of 65823197 in words is "sixty-five million, eight hundred twenty-three thousand, one hundred ninety-seven".