65081223 has 6 divisors (see below), whose sum is σ = 94006224. Its totient is φ = 43387476.

The previous prime is 65081207. The next prime is 65081243. The reversal of 65081223 is 32218056.

65081223 is a `hidden beast` number, since 650 + 8 + 1 + 2 + 2 + 3 = 666.

It is not a de Polignac number, because 65081223 - 2⁴ = 65081207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65081243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3615615 + ... + 3615632.

It is an arithmetic number, because the mean of its divisors is an integer number (15667704).

Almost surely, 2^65081223 is an apocalyptic number.

65081223 is a deficient number, since it is larger than the sum of its proper divisors (28925001).

65081223 is a wasteful number, since it uses less digits than its factorization.

65081223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7231253 (or 7231250 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 65081223 is about 8067.2934122914. The cubic root of 65081223 is about 402.2399807178.

Adding to 65081223 its reverse (32218056), we get a palindrome (97299279).

The spelling of 65081223 in words is "sixty-five million, eighty-one thousand, two hundred twenty-three".