64881212 has 24 divisors (see below), whose sum is σ = 124150320. Its totient is φ = 29423360.

The previous prime is 64881209. The next prime is 64881251. The reversal of 64881212 is 21218846.

It is a happy number.

64881212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20948 + ... + 23844.

It is an arithmetic number, because the mean of its divisors is an integer number (5172930).

Almost surely, 2^64881212 is an apocalyptic number.

It is an amenable number.

64881212 is a deficient number, since it is larger than the sum of its proper divisors (59269108).

64881212 is a wasteful number, since it uses less digits than its factorization.

64881212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421 (or 3419 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 64881212 is about 8054.8874604181. The cubic root of 64881212 is about 401.8274962615.

The spelling of 64881212 in words is "sixty-four million, eight hundred eighty-one thousand, two hundred twelve".