64040385 has 16 divisors (see below), whose sum is σ = 103274496. Its totient is φ = 33884928.

The previous prime is 64040359. The next prime is 64040477. The reversal of 64040385 is 58304046.

64040385 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 64040385 - 2¹⁰ = 64039361 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 14904 + ... + 18713.

It is an arithmetic number, because the mean of its divisors is an integer number (6454656).

Almost surely, 2^64040385 is an apocalyptic number.

It is an amenable number.

64040385 is a deficient number, since it is larger than the sum of its proper divisors (39234111).

64040385 is a wasteful number, since it uses less digits than its factorization.

64040385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33752.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 64040385 is about 8002.5236644449. The cubic root of 64040385 is about 400.0841177259.

The spelling of 64040385 in words is "sixty-four million, forty thousand, three hundred eighty-five".