64715005 has 32 divisors (see below), whose sum is σ = 85349376. Its totient is φ = 46915584.

The previous prime is 64714997. The next prime is 64715029. The reversal of 64715005 is 50051746.

It is a cyclic number.

It is not a de Polignac number, because 64715005 - 2³ = 64714997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387432 + ... + 387598.

It is an arithmetic number, because the mean of its divisors is an integer number (2667168).

Almost surely, 2^64715005 is an apocalyptic number.

It is an amenable number.

64715005 is a deficient number, since it is larger than the sum of its proper divisors (20634371).

64715005 is a wasteful number, since it uses less digits than its factorization.

64715005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 64715005 is about 8044.5636923329. The cubic root of 64715005 is about 401.4840807014.

It can be divided in two parts, 6471 and 5005, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 64715005 in words is "sixty-four million, seven hundred fifteen thousand, five".