64205305 has 8 divisors (see below), whose sum is σ = 80396352. Its totient is φ = 49130928.

The previous prime is 64205293. The next prime is 64205329. The reversal of 64205305 is 50350246.

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 64205305 - 2⁷ = 64205177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64205305.

It is an unprimeable number.

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, 279039 + ... + 279268.

It is an arithmetic number, because the mean of its divisors is an integer number (10049544).

Almost surely, 2^64205305 is an apocalyptic number.

It is an amenable number.

64205305 is a deficient number, since it is larger than the sum of its proper divisors (16191047).

64205305 is a wasteful number, since it uses less digits than its factorization.

64205305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558335.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 64205305 is about 8012.8212884102. The cubic root of 64205305 is about 400.4272622050.

The spelling of 64205305 in words is "sixty-four million, two hundred five thousand, three hundred five".