64464321 has 8 divisors (see below), whose sum is σ = 90476320. Its totient is φ = 40714272.

The previous prime is 64464319. The next prime is 64464347. The reversal of 64464321 is 12346446.

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

It is not a de Polignac number, because 64464321 - 2¹ = 64464319 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64464371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565420 + ... + 565533.

It is an arithmetic number, because the mean of its divisors is an integer number (11309540).

Almost surely, 2^64464321 is an apocalyptic number.

It is an amenable number.

64464321 is a deficient number, since it is larger than the sum of its proper divisors (26011999).

64464321 is a wasteful number, since it uses less digits than its factorization.

64464321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130975.

The product of its digits is 13824, while the sum is 30.

The square root of 64464321 is about 8028.9676173217. The cubic root of 64464321 is about 400.9650054557.

The spelling of 64464321 in words is "sixty-four million, four hundred sixty-four thousand, three hundred twenty-one".