65223013 has 4 divisors (see below), whose sum is σ = 65242188. Its totient is φ = 65203840.

The previous prime is 65222947. The next prime is 65223017. The reversal of 65223013 is 31032256.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43850884 + 21372129 = 6622^2 + 4623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65223013 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 (65223017) 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, 2956 + ... + 11797.

It is an arithmetic number, because the mean of its divisors is an integer number (16310547).

Almost surely, 2^65223013 is an apocalyptic number.

It is an amenable number.

65223013 is a deficient number, since it is larger than the sum of its proper divisors (19175).

65223013 is a wasteful number, since it uses less digits than its factorization.

65223013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19174.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 65223013 is about 8076.0765845799. The cubic root of 65223013 is about 402.5318838470.

Adding to 65223013 its reverse (31032256), we get a palindrome (96255269).

The spelling of 65223013 in words is "sixty-five million, two hundred twenty-three thousand, thirteen".