65320223 has 4 divisors (see below), whose sum is σ = 65410800. Its totient is φ = 65229648.

The previous prime is 65320219. The next prime is 65320237. The reversal of 65320223 is 32202356.

It is a happy number.

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 65320223 - 2² = 65320219 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 (65320523) 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, 44198 + ... + 45651.

It is an arithmetic number, because the mean of its divisors is an integer number (16352700).

Almost surely, 2^65320223 is an apocalyptic number.

65320223 is a deficient number, since it is larger than the sum of its proper divisors (90577).

65320223 is an equidigital number, since it uses as much as digits as its factorization.

65320223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90576.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 65320223 is about 8082.0927364143. The cubic root of 65320223 is about 402.7317657523.

Adding to 65320223 its reverse (32202356), we get a palindrome (97522579).

The spelling of 65320223 in words is "sixty-five million, three hundred twenty thousand, two hundred twenty-three".