64695305 has 4 divisors (see below), whose sum is σ = 77634372. Its totient is φ = 51756240.

The previous prime is 64695287. The next prime is 64695311. The reversal of 64695305 is 50359646.

64695305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37613689 + 27081616 = 6133^2 + 5204^2 .

It is not a de Polignac number, because 64695305 - 2¹⁶ = 64629769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6469526 + ... + 6469535.

It is an arithmetic number, because the mean of its divisors is an integer number (19408593).

Almost surely, 2^64695305 is an apocalyptic number.

It is an amenable number.

64695305 is a deficient number, since it is larger than the sum of its proper divisors (12939067).

64695305 is a wasteful number, since it uses less digits than its factorization.

64695305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12939066.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 64695305 is about 8043.3391697727. The cubic root of 64695305 is about 401.4433377595.

The spelling of 64695305 in words is "sixty-four million, six hundred ninety-five thousand, three hundred five".