65243797 has 4 divisors (see below), whose sum is σ = 65288160. Its totient is φ = 65199436.

The previous prime is 65243791. The next prime is 65243813. The reversal of 65243797 is 79734256.

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 65243797 - 2¹¹ = 65241749 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 (65243791) 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, 19897 + ... + 22942.

It is an arithmetic number, because the mean of its divisors is an integer number (16322040).

Almost surely, 2^65243797 is an apocalyptic number.

It is an amenable number.

65243797 is a deficient number, since it is larger than the sum of its proper divisors (44363).

65243797 is a wasteful number, since it uses less digits than its factorization.

65243797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44362.

The product of its digits is 317520, while the sum is 43.

The square root of 65243797 is about 8077.3632455152. The cubic root of 65243797 is about 402.5746363142.

The spelling of 65243797 in words is "sixty-five million, two hundred forty-three thousand, seven hundred ninety-seven".