64321841 has 4 divisors (see below), whose sum is σ = 64468800. Its totient is φ = 64174884.

The previous prime is 64321837. The next prime is 64321843. The reversal of 64321841 is 14812346.

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 64321841 - 2² = 64321837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64321843) 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, 72821 + ... + 73698.

It is an arithmetic number, because the mean of its divisors is an integer number (16117200).

Almost surely, 2^64321841 is an apocalyptic number.

It is an amenable number.

64321841 is a deficient number, since it is larger than the sum of its proper divisors (146959).

64321841 is a wasteful number, since it uses less digits than its factorization.

64321841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146958.

The product of its digits is 4608, while the sum is 29.

The square root of 64321841 is about 8020.0898374021. The cubic root of 64321841 is about 400.6693812802.

The spelling of 64321841 in words is "sixty-four million, three hundred twenty-one thousand, eight hundred forty-one".