64478827 has 16 divisors (see below), whose sum is σ = 76069312. Its totient is φ = 53498880.

The previous prime is 64478779. The next prime is 64478833. The reversal of 64478827 is 72887446.

It is a cyclic number.

It is not a de Polignac number, because 64478827 - 2⁷ = 64478699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64778827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61903 + ... + 62935.

It is an arithmetic number, because the mean of its divisors is an integer number (4754332).

Almost surely, 2^64478827 is an apocalyptic number.

64478827 is a deficient number, since it is larger than the sum of its proper divisors (11590485).

64478827 is a wasteful number, since it uses less digits than its factorization.

64478827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318.

The product of its digits is 602112, while the sum is 46.

The square root of 64478827 is about 8029.8709205068. The cubic root of 64478827 is about 400.9950787430.

The spelling of 64478827 in words is "sixty-four million, four hundred seventy-eight thousand, eight hundred twenty-seven".