64639201 has 8 divisors (see below), whose sum is σ = 70925184. Its totient is φ = 58421520.

The previous prime is 64639189. The next prime is 64639207. The reversal of 64639201 is 10293646.

64639201 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 64639201 - 2⁷ = 64639073 is a prime.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (64639207) 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, 15081 + ... + 18886.

It is an arithmetic number, because the mean of its divisors is an integer number (8865648).

Almost surely, 2^64639201 is an apocalyptic number.

It is an amenable number.

64639201 is a deficient number, since it is larger than the sum of its proper divisors (6285983).

64639201 is a wasteful number, since it uses less digits than its factorization.

64639201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34151.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 64639201 is about 8039.8508070735. The cubic root of 64639201 is about 401.3272598322.

The spelling of 64639201 in words is "sixty-four million, six hundred thirty-nine thousand, two hundred one".