64685842 has 32 divisors (see below), whose sum is σ = 112996800. Its totient is φ = 27511488.

The previous prime is 64685839. The next prime is 64685849. The reversal of 64685842 is 24858646.

64685842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64685849) 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, 16509 + ... + 20047.

It is an arithmetic number, because the mean of its divisors is an integer number (3531150).

Almost surely, 2^64685842 is an apocalyptic number.

64685842 is a deficient number, since it is larger than the sum of its proper divisors (48310958).

64685842 is a wasteful number, since it uses less digits than its factorization.

64685842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610.

The product of its digits is 368640, while the sum is 43.

The square root of 64685842 is about 8042.7508975474. The cubic root of 64685842 is about 401.4237637294.

The spelling of 64685842 in words is "sixty-four million, six hundred eighty-five thousand, eight hundred forty-two".