64005287 has 8 divisors (see below), whose sum is σ = 65217552. Its totient is φ = 62798400.

The previous prime is 64005283. The next prime is 64005299. The reversal of 64005287 is 78250046.

64005287 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 64005287 - 2² = 64005283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64005283) 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, 28883 + ... + 31019.

It is an arithmetic number, because the mean of its divisors is an integer number (8152194).

Almost surely, 2^64005287 is an apocalyptic number.

64005287 is a deficient number, since it is larger than the sum of its proper divisors (1212265).

64005287 is a wasteful number, since it uses less digits than its factorization.

64005287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 64005287 is about 8000.3304306760. The cubic root of 64005287 is about 400.0110142800.

The spelling of 64005287 in words is "sixty-four million, five thousand, two hundred eighty-seven".