64578212 has 6 divisors (see below), whose sum is σ = 113011878. Its totient is φ = 32289104.

The previous prime is 64578211. The next prime is 64578253. The reversal of 64578212 is 21287546.

64578212 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 only one way, i.e., 61842496 + 2735716 = 7864^2 + 1654^2 .

It is not an unprimeable number, because it can be changed into a prime (64578211) 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 as a sum of consecutive naturals, namely, 8072273 + ... + 8072280.

It is an arithmetic number, because the mean of its divisors is an integer number (18835313).

Almost surely, 2^64578212 is an apocalyptic number.

It is an amenable number.

64578212 is a deficient number, since it is larger than the sum of its proper divisors (48433666).

64578212 is a wasteful number, since it uses less digits than its factorization.

64578212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16144557 (or 16144555 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 64578212 is about 8036.0569933270. The cubic root of 64578212 is about 401.2009987295.

The spelling of 64578212 in words is "sixty-four million, five hundred seventy-eight thousand, two hundred twelve".