65016321 has 4 divisors (see below), whose sum is σ = 86688432. Its totient is φ = 43344212.

The previous prime is 65016317. The next prime is 65016353. The reversal of 65016321 is 12361056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65016321 - 2² = 65016317 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 65016291 and 65016300.

It is not an unprimeable number, because it can be changed into a prime (65016121) 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, 10836051 + ... + 10836056.

It is an arithmetic number, because the mean of its divisors is an integer number (21672108).

Almost surely, 2^65016321 is an apocalyptic number.

It is an amenable number.

65016321 is a deficient number, since it is larger than the sum of its proper divisors (21672111).

65016321 is a wasteful number, since it uses less digits than its factorization.

65016321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21672110.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 65016321 is about 8063.2698702201. The cubic root of 65016321 is about 402.1062254863.

Adding to 65016321 its reverse (12361056), we get a palindrome (77377377).

The spelling of 65016321 in words is "sixty-five million, sixteen thousand, three hundred twenty-one".