64922816 has 28 divisors (see below), whose sum is σ = 147236688. Its totient is φ = 27823872.

The previous prime is 64922789. The next prime is 64922821. The reversal of 64922816 is 61822946.

64922816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (28).

It is a self number, because there is not a number n which added to its sum of digits gives 64922816.

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 3 ways as a sum of consecutive naturals, for example, 72011 + ... + 72906.

Almost surely, 2^64922816 is an apocalyptic number.

It is an amenable number.

64922816 is an abundant number, since it is smaller than the sum of its proper divisors (82313872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64922816 is a wasteful number, since it uses less digits than its factorization.

64922816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144936 (or 144926 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 64922816 is about 8057.4695779755. The cubic root of 64922816 is about 401.9133663134.

The spelling of 64922816 in words is "sixty-four million, nine hundred twenty-two thousand, eight hundred sixteen".