64988844 has 24 divisors (see below), whose sum is σ = 152365248. Its totient is φ = 21559440.

The previous prime is 64988843. The next prime is 64988849. The reversal of 64988844 is 44888946.

It is not an unprimeable number, because it can be changed into a prime (64988843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10302 + ... + 15365.

It is an arithmetic number, because the mean of its divisors is an integer number (6348552).

Almost surely, 2^64988844 is an apocalyptic number.

It is an amenable number.

64988844 is an abundant number, since it is smaller than the sum of its proper divisors (87376404).

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

64988844 is a wasteful number, since it uses less digits than its factorization.

64988844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25885 (or 25883 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 51.

The square root of 64988844 is about 8061.5658528601. The cubic root of 64988844 is about 402.0495718676.

The spelling of 64988844 in words is "sixty-four million, nine hundred eighty-eight thousand, eight hundred forty-four".