65064321 has 48 divisors (see below), whose sum is σ = 115315200. Its totient is φ = 34504704.

The previous prime is 65064317. The next prime is 65064323. The reversal of 65064321 is 12346056.

65064321 is a `hidden beast` number, since 650 + 6 + 4 + 3 + 2 + 1 = 666.

It is not a de Polignac number, because 65064321 - 2² = 65064317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65064323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84225 + ... + 84993.

It is an arithmetic number, because the mean of its divisors is an integer number (2402400).

Almost surely, 2^65064321 is an apocalyptic number.

It is an amenable number.

65064321 is a deficient number, since it is larger than the sum of its proper divisors (50250879).

65064321 is a wasteful number, since it uses less digits than its factorization.

65064321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 65064321 is about 8066.2457810310. The cubic root of 65064321 is about 402.2051562913.

The spelling of 65064321 in words is "sixty-five million, sixty-four thousand, three hundred twenty-one".