64864785 has 16 divisors (see below), whose sum is σ = 104025600. Its totient is φ = 34513920.

The previous prime is 64864783. The next prime is 64864799. The reversal of 64864785 is 58746846.

64864785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64864785 - 2¹ = 64864783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64864783) 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 15 ways as a sum of consecutive naturals, for example, 1920 + ... + 11550.

It is an arithmetic number, because the mean of its divisors is an integer number (6501600).

Almost surely, 2^64864785 is an apocalyptic number.

It is an amenable number.

64864785 is a deficient number, since it is larger than the sum of its proper divisors (39160815).

64864785 is a wasteful number, since it uses less digits than its factorization.

64864785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10088.

The product of its digits is 1290240, while the sum is 48.

The square root of 64864785 is about 8053.8677044014. The cubic root of 64864785 is about 401.7935810636.

The spelling of 64864785 in words is "sixty-four million, eight hundred sixty-four thousand, seven hundred eighty-five".