64547012 has 6 divisors (see below), whose sum is σ = 112957278. Its totient is φ = 32273504.

The previous prime is 64546973. The next prime is 64547017. The reversal of 64547012 is 21074546.

64547012 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., 54523456 + 10023556 = 7384^2 + 3166^2 .

It is not an unprimeable number, because it can be changed into a prime (64547017) 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, 8068373 + ... + 8068380.

It is an arithmetic number, because the mean of its divisors is an integer number (18826213).

Almost surely, 2^64547012 is an apocalyptic number.

It is an amenable number.

64547012 is a deficient number, since it is larger than the sum of its proper divisors (48410266).

64547012 is a wasteful number, since it uses less digits than its factorization.

64547012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16136757 (or 16136755 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 64547012 is about 8034.1155082560. The cubic root of 64547012 is about 401.1363768950.

The spelling of 64547012 in words is "sixty-four million, five hundred forty-seven thousand, twelve".