64684276 has 12 divisors (see below), whose sum is σ = 114024708. Its totient is φ = 32105792.

The previous prime is 64684273. The next prime is 64684289. The reversal of 64684276 is 67248646.

64684276 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 32194276 + 32490000 = 5674^2 + 5700^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64684271) 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 3 ways as a sum of consecutive naturals, for example, 58471 + ... + 59566.

It is an arithmetic number, because the mean of its divisors is an integer number (9502059).

Almost surely, 2^64684276 is an apocalyptic number.

It is an amenable number.

64684276 is a deficient number, since it is larger than the sum of its proper divisors (49340432).

64684276 is a wasteful number, since it uses less digits than its factorization.

64684276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118178 (or 118176 counting only the distinct ones).

The product of its digits is 387072, while the sum is 43.

The square root of 64684276 is about 8042.6535422086. The cubic root of 64684276 is about 401.4205243050.

The spelling of 64684276 in words is "sixty-four million, six hundred eighty-four thousand, two hundred seventy-six".