64305321 has 4 divisors (see below), whose sum is σ = 85740432. Its totient is φ = 42870212.

The previous prime is 64305301. The next prime is 64305337. The reversal of 64305321 is 12350346.

It is a happy number.

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 64305321 - 2⁹ = 64304809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64305291 and 64305300.

It is not an unprimeable number, because it can be changed into a prime (64305301) 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, 10717551 + ... + 10717556.

It is an arithmetic number, because the mean of its divisors is an integer number (21435108).

Almost surely, 2^64305321 is an apocalyptic number.

It is an amenable number.

64305321 is a deficient number, since it is larger than the sum of its proper divisors (21435111).

64305321 is a wasteful number, since it uses less digits than its factorization.

64305321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21435110.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 64305321 is about 8019.0598576142. The cubic root of 64305321 is about 400.6350765774.

Adding to 64305321 its reverse (12350346), we get a palindrome (76655667).

The spelling of 64305321 in words is "sixty-four million, three hundred five thousand, three hundred twenty-one".