64728001 has 8 divisors (see below), whose sum is σ = 69776000. Its totient is φ = 59689872.

The previous prime is 64727933. The next prime is 64728019. The reversal of 64728001 is 10082746.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64728001 is a prime.

It is a super-2 number, since 2×64728001² = 8379428226912002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64728101) 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, 16750 + ... + 20248.

It is an arithmetic number, because the mean of its divisors is an integer number (8722000).

Almost surely, 2^64728001 is an apocalyptic number.

It is an amenable number.

64728001 is a deficient number, since it is larger than the sum of its proper divisors (5047999).

64728001 is a wasteful number, since it uses less digits than its factorization.

64728001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 64728001 is about 8045.3714022412. The cubic root of 64728001 is about 401.5109541078.

The spelling of 64728001 in words is "sixty-four million, seven hundred twenty-eight thousand, one".