64005887 has 8 divisors (see below), whose sum is σ = 71448960. Its totient is φ = 56833560.

The previous prime is 64005881. The next prime is 64005911. The reversal of 64005887 is 78850046.

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 64005887 - 2¹⁴ = 63989503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64005887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64005881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67187 + ... + 68132.

It is an arithmetic number, because the mean of its divisors is an integer number (8931120).

Almost surely, 2^64005887 is an apocalyptic number.

64005887 is a deficient number, since it is larger than the sum of its proper divisors (7443073).

64005887 is a wasteful number, since it uses less digits than its factorization.

64005887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135373.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 64005887 is about 8000.3679290393. The cubic root of 64005887 is about 400.0122642073.

The spelling of 64005887 in words is "sixty-four million, five thousand, eight hundred eighty-seven".