64546321 has 8 divisors (see below), whose sum is σ = 74056320. Its totient is φ = 55108608.

The previous prime is 64546319. The next prime is 64546337. The reversal of 64546321 is 12364546.

64546321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64546321 - 2¹ = 64546319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64546921) 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 7 ways as a sum of consecutive naturals, for example, 16141 + ... + 19738.

It is an arithmetic number, because the mean of its divisors is an integer number (9257040).

Almost surely, 2^64546321 is an apocalyptic number.

It is an amenable number.

64546321 is a deficient number, since it is larger than the sum of its proper divisors (9509999).

64546321 is a wasteful number, since it uses less digits than its factorization.

64546321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36143.

The product of its digits is 17280, while the sum is 31.

The square root of 64546321 is about 8034.0725040293. The cubic root of 64546321 is about 401.1349454514.

The spelling of 64546321 in words is "sixty-four million, five hundred forty-six thousand, three hundred twenty-one".