65226643 has 4 divisors (see below), whose sum is σ = 68062608. Its totient is φ = 62390680.

The previous prime is 65226619. The next prime is 65226653. The reversal of 65226643 is 34662256.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65226643 - 2²⁵ = 31672211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65226599 and 65226608.

It is not an unprimeable number, because it can be changed into a prime (65226653) 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, 1417948 + ... + 1417993.

It is an arithmetic number, because the mean of its divisors is an integer number (17015652).

Almost surely, 2^65226643 is an apocalyptic number.

65226643 is a deficient number, since it is larger than the sum of its proper divisors (2835965).

65226643 is a wasteful number, since it uses less digits than its factorization.

65226643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835964.

The product of its digits is 51840, while the sum is 34.

The square root of 65226643 is about 8076.3013192921. The cubic root of 65226643 is about 402.5393513729.

Adding to 65226643 its reverse (34662256), we get a palindrome (99888899).

The spelling of 65226643 in words is "sixty-five million, two hundred twenty-six thousand, six hundred forty-three".