65481223 has 4 divisors (see below), whose sum is σ = 67078368. Its totient is φ = 63884080.

The previous prime is 65481211. The next prime is 65481281. The reversal of 65481223 is 32218456.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65481223 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65481523) 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, 798511 + ... + 798592.

It is an arithmetic number, because the mean of its divisors is an integer number (16769592).

Almost surely, 2^65481223 is an apocalyptic number.

65481223 is a deficient number, since it is larger than the sum of its proper divisors (1597145).

65481223 is a wasteful number, since it uses less digits than its factorization.

65481223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597144.

The product of its digits is 11520, while the sum is 31.

The square root of 65481223 is about 8092.0468980351. The cubic root of 65481223 is about 403.0623760502.

Adding to 65481223 its reverse (32218456), we get a palindrome (97699679).

The spelling of 65481223 in words is "sixty-five million, four hundred eighty-one thousand, two hundred twenty-three".