65146321 has 4 divisors (see below), whose sum is σ = 65358832. Its totient is φ = 64933812.

The previous prime is 65146303. The next prime is 65146331. The reversal of 65146321 is 12364156.

65146321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65146321 - 2¹¹ = 65144273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65146321.

It is not an unprimeable number, because it can be changed into a prime (65146331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105795 + ... + 106408.

It is an arithmetic number, because the mean of its divisors is an integer number (16339708).

Almost surely, 2^65146321 is an apocalyptic number.

It is an amenable number.

65146321 is a deficient number, since it is larger than the sum of its proper divisors (212511).

65146321 is a wasteful number, since it uses less digits than its factorization.

65146321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212510.

The product of its digits is 4320, while the sum is 28.

The square root of 65146321 is about 8071.3270903861. The cubic root of 65146321 is about 402.3740505837.

The spelling of 65146321 in words is "sixty-five million, one hundred forty-six thousand, three hundred twenty-one".